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Pergunta 1 Relatório
Detalhes da Resposta
The term over-population is best defined as the situation where the population exceeds available resources. This means that the number of people in an area is greater than the resources available to sustain them, such as food, water, shelter, and health care. It can lead to various problems including poverty, environmental degradation, and a strain on infrastructure. Over-population occurs when the existing resources cannot meet the needs of the people, resulting in hardship and reduced quality of life.
In contrast, having a birth rate equal to the death rate implies a stable population over time, not necessarily over-population. Increasing birth rate and decreasing infant mortality can contribute to population growth, but they do not solely define over-population. Finally, high population density refers to a large number of people living in a small area, which could lead to over-population if resources are insufficient, but high density alone does not equate to over-population.
Pergunta 2 Relatório
Which of the following environmental hazards is due primarily to human activities?
Detalhes da Resposta
The environmental hazard that is due primarily to human activities is ozone depletion.
The ozone layer is a protective shield in the Earth's stratosphere that absorbs most of the Sun's harmful ultraviolet radiation. The thinning of the ozone layer is mainly caused by the release of man-made chemicals. The most significant contributors to this environmental hazard are chlorofluorocarbons (CFCs) and other ozone-depleting substances (ODS) which have been used in refrigeration, air conditioning, foam production, and aerosol propellants. When these chemicals reach the stratosphere, they break down ozone molecules, leading to what is known as the "ozone hole."
In contrast, the other environmental hazards listed—hurricanes, earthquakes, and volcanic eruptions—are natural phenomena. While human activities can influence the severity or impact of these events, such as through climate change exacerbating the intensity of hurricanes or human settlement in earthquake-prone areas, they are not primarily caused by human actions.
Pergunta 3 Relatório
A great advantage of Basin irrigation is that
Detalhes da Resposta
A great advantage of Basin irrigation is that water is not wasted, as the basin helps to trap and conserve water.
Pergunta 4 Relatório
The tourist centre of Ogbunike cave is located near
Detalhes da Resposta
The Ogbunike Cave is a popular tourist destination located **near Onitsha in Anambra State**. This cave is part of a large system of limestone caves and is known for its historical and cultural significance to the people of the region. It's situated in the southeastern part of Nigeria and is associated with numerous legends and stories that reflect its importance to local traditions. Therefore, the correct location for Ogbunike Cave is **near Onitsha in Anambra State**.
Pergunta 5 Relatório
All the major industrial zones of Nigeria owe their origin mainly to
Detalhes da Resposta
The major industrial zones of Nigeria owe their origin mainly to the presence of cash crops. This is because, historically, Nigeria's economy largely depended on agriculture, and the availability of these cash crops provided a foundation for establishing industries. For example, regions where cash crops such as cocoa, palm oil, rubber, and groundnuts were abundantly grown became focal points for industries.
These crops were in high demand both locally and internationally, encouraging the establishment of processing industries to add value before export. This led to the development of infrastructure and contributed to the economic growth of these regions.
Thus, the presence of cash crops has played a significant role in shaping the industrial landscape of Nigeria by attracting investments, creating jobs, and fostering economic development in the respective regions.
Pergunta 6 Relatório
A conurbation is a settlement
Detalhes da Resposta
A conurbation is a large urban area where several towns or cities have grown and merged together over a significant geographical area. This results in a continuous urban environment that functions as a single economic, social, and administrative unit. It is characterized by not only the physical merging but also the economic and social integration of these urban areas. Importantly, while these towns join together, they often retain their individual identities to some extent, but collectively they function as a larger urban zone.
Hence, the most accurate explanation is that a conurbation is a settlement where a large number of towns join together over a considerable area. This results in significant density and sometimes shared infrastructure and services. It is not merely about the number of people, nor does it focus primarily on an agricultural economy (such as predominantly farmers). Likewise, even though two or more towns combine, the emphasis is on the large-scale joining and integration process across numerous towns, rather than solely retaining distinct identities.
Pergunta 7 Relatório
Which of the following geographical regions of Nigeria covers one-fifth of the country and has a generally flat surface dotted with granitic hills? The
Detalhes da Resposta
The geographical region of Nigeria described in the question is the North-Central Highlands. This area covers about one-fifth of the country and is characterized by a generally flat surface with granitic hills, known as inselbergs, scattered throughout the landscape. These hills are composed of hard rock formations that have resisted erosion, thereby standing out from the flatter surroundings.
This region is situated in the north-central part of Nigeria and is significant for its geological features and agricultural potential. The flat terrain provides an expansive area suitable for farming, while the inselbergs add to the region's natural beauty and sometimes serve as landmarks. The North-Central Highlands are an important and distinct geographical region within Nigeria due to these unique characteristics.
Pergunta 8 Relatório
The angular distance of a point on the Earth's surface measured in degrees from the centre of the Earth east or west of the Greenwich Meridian is known as
Detalhes da Resposta
The angular distance of a point on the Earth's surface measured in degrees from the centre of the Earth east or west of the Greenwich Meridian is known as longitude.
Let's break this down to make it simple:
Longitude lines are imaginary lines that run from the North Pole to the South Pole. The most important line is the Greenwich Meridian, also called the Prime Meridian, which is the reference point for measuring longitude. It is designated as zero degrees (0°) longitude. When you measure how far east or west a point is from the Prime Meridian, you are measuring the longitude.
This is different from latitude, which measures the distance north or south of the Equator. Longitude lines meet at the poles, whereas latitude lines are parallel to each other.
Overall, longitude helps us determine the precise location of a place on Earth by specifying how far east or west it is from the Prime Meridian.
Pergunta 9 Relatório
Mountains formed as a result of compressional forces in the earth's crust are
Detalhes da Resposta
The mountains formed as a result of compressional forces in the Earth's crust are known as fold mountains. Fold mountains are created when two tectonic plates collide, and the compressional forces involved cause the layers of the Earth's crust to crumple and fold.
Imagine it like pushing two pieces of paper together from opposite ends; they begin to crumple and form folds. Similarly, when large sections of the Earth's crust are subjected to immense pressures from the sides, they buckle and bend into wave-like structures called folds. These folds then rise over time to form fold mountains.
Some of the most well-known mountain ranges in the world, like the Himalayas, the Alps, and the Rockies, are examples of fold mountains.
In summary, fold mountains are formed by the compression and folding of the Earth's crust, making them a direct result of tectonic forces that push the land upwards to form mountains.
Pergunta 10 Relatório
Detalhes da Resposta
Quartzite, schist, and marble are all examples of metamorphic rocks.
Here's why:
Sedimentary Rocks are formed from the accumulation of sediments, while Igneous Rocks are formed from the cooling and solidification of magma or lava. Volcanic rocks are a subset of igneous rocks that specifically form from lava at the earth's surface. Thus, quartzite, schist, and marble do not fall under these categories.
Pergunta 11 Relatório
An example of an organically formed sedimentary rock is
Detalhes da Resposta
An example of an organically formed sedimentary rock is coal.
Coal is formed from the remains of dead plants that accumulated in ancient swamps and wetlands. Over millions of years, these plant materials were buried under layers of sediment. As more layers built up on top, the increased pressure and heat transformed the plant remains into coal. The process involved is known as biochemical sedimentation, where organic materials are compacted and altered to form rock.
This is in contrast to the other options:
To summarize, coal is the organically formed sedimentary rock among these options because it originates from ancient plant material that has undergone compaction and chemical transformation over time.
Pergunta 12 Relatório
Detalhes da Resposta
The nearest planet to the Sun is Mercury.
Here's a simple explanation: The Solar System consists of eight major planets, which include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, arranged in that order from closest to the Sun to farthest. Pluto, once considered the ninth planet, has been reclassified as a "dwarf planet" and is well beyond Neptune.
Mercury, being the closest planet to the Sun, has a very short orbit compared to other planets. It completes one orbit around the Sun in just about 88 Earth days. Because of its proximity to the Sun, Mercury experiences significant temperature variations, extremely hot during the day and very cold at night.
Pergunta 13 Relatório
A major problem in agricultural development in Nigeria is
Detalhes da Resposta
One of the major problems in agricultural development in Nigeria is the insufficient storage facilities.
The agricultural sector in Nigeria often faces difficulties after crops are harvested. Poor storage facilities mean that a substantial portion of the agricultural produce is lost due to spoilage, pests, or damage. This is a significant challenge because:
Improving storage facilities would provide farmers with the ability to manage their production better, ensuring a more consistent supply of agricultural products and contributing significantly to the development of agriculture in Nigeria.
Pergunta 14 Relatório
The equatorial diameter of the earth is approximately
Detalhes da Resposta
The equatorial diameter of the earth is approximately 6,760 km. This is the distance from the equator to the equator, passing through the center of the earth.
Pergunta 15 Relatório
A large expanse of low, level land, formed due to an uplift of part of the sea floor bordering a continent is called
Detalhes da Resposta
A **coastal plain** is a **large expanse of low, level land** that is formed due to an **uplift of part of the sea floor bordering a continent**. Essentially, it is an area where the land is relatively flat and is located near the coast.
This type of landform often occurs due to geological activities over time where the sea floor is pushed upwards, resulting in a broad, flat land surface extending inland from the coast. Coastal plains are typically characterized by their flat terrain and proximity to the ocean, making them influenced by marine conditions.
In summary, **a coastal plain is the result of the elevation of a portion of the sea floor adjacent to the continent**. It is characterized by its flatness and location near the sea, distinguishing it from other types of plains such as deltaic, outwash, or flood plains which have different formation processes and characteristics.
Pergunta 16 Relatório
When the sun is directly overhead at the tropic of Capricorn (23 %, °) on 22nd December, the Northern Hemisphere experiences it's
Detalhes da Resposta
On 22nd December, the sun is directly overhead the Tropic of Capricorn in the Southern Hemisphere. This marks a significant event in both hemispheres.
In the Northern Hemisphere, this date corresponds to the **winter solstice**. Here's why:
The Earth is tilted on its axis by about 23.5 degrees. This tilt is responsible for the changing seasons. Throughout the year, different parts of the Earth receive varying amounts of sunlight depending on the planet's position in its orbit around the Sun.
During the winter solstice, the Northern Hemisphere is tilted farthest away from the Sun. As a result, it experiences the shortest day and the longest night of the year. The **winter solstice** marks the official start of winter in the Northern Hemisphere.
Thus, when the sun is directly overhead at the Tropic of Capricorn on 22nd December, the Northern Hemisphere experiences its **winter solstice**.
Pergunta 17 Relatório
Copper is an important raw material in the
Detalhes da Resposta
Copper is an important raw material in the electrical industry. This is because copper is an excellent conductor of electricity, which means it allows electrical current to flow through it easily with minimal resistance. This property makes copper ideal for use in electrical wiring, motors, transformers, and other electrical components. Additionally, copper is highly durable, resistant to corrosion, and versatile, which further enhances its usefulness in electrical applications. The electrical industry relies heavily on copper to ensure reliable and efficient power transmission.
Pergunta 18 Relatório
The ocean that connects Europe and America is the
Detalhes da Resposta
The ocean that connects Europe and America is the Atlantic Ocean.
Here's a simple explanation: The Atlantic Ocean is a massive body of water that lies between the continents of Europe and Africa to the east and the Americas to the west. This ocean is one of the world's five major oceans and is the second largest after the Pacific Ocean. Historically, the Atlantic Ocean has been significantly important as a route for ships traveling between Europe and the Americas, playing a crucial role in exploration, commerce, and cultural exchanges.
Pergunta 19 Relatório
A conurbation can best be described as
Detalhes da Resposta
A conurbation is a term used to describe a group of cities, towns, or urban areas that have merged together to form a single urban entity, while still retaining their individual identities.
Pergunta 20 Relatório
The major problem facing the utilization of human resources in West Africa is
Detalhes da Resposta
One of the major problems impacting the effective utilization of human resources in West Africa is unemployment.
Unemployment is a significant issue because it leads to several challenges that adversely affect both individuals and the economy at large. When people, especially those who are capable and willing to work, do not have jobs, it results in a waste of potential human resources. Let's break down a few reasons why unemployment is such a pressing problem:
Addressing unemployment requires collaborative efforts involving government policies, education systems, and private sector initiatives to create more job opportunities and develop skills that match the demands of the labor market. Therefore, unemployment remains a critical concern in achieving optimal utilization of human resources in West Africa.
Pergunta 21 Relatório
The world's busiest shipping routes are on the
Detalhes da Resposta
The world's busiest shipping routes are found on the Atlantic Ocean. This ocean plays a crucial role in global trade and transportation due to several factors:
While other oceans like the Pacific and Indian Oceans are also important for global trade, the Atlantic Ocean remains particularly significant due to its connectivity and the economic powerhouses it links. The Antarctic Circle is not a major route due to its harsh environmental conditions and minimal human inhabitation, which reduces commercial sea traffic in that region.
Pergunta 22 Relatório
Which of the following lines of latitudes divides the earth into two hemispheres
Detalhes da Resposta
The line of latitude that divides the Earth into two hemispheres is the Equator. The Equator is an imaginary line that is drawn around the middle of the Earth. It is equidistant from the North and South Poles, and it is located at 0 degrees latitude.
Because it sits exactly halfway between the poles, the Equator splits the Earth into two equal parts: the Northern Hemisphere and the Southern Hemisphere. The land and water areas located to the north of the Equator make up the Northern Hemisphere, while those located to the south comprise the Southern Hemisphere.
The importance of the Equator is not just in the division of hemispheres; it also plays a crucial role in climate. Regions located near the Equator typically experience a tropical climate with minimal temperature variations year-round.
In contrast, lines like the Tropic of Cancer and the Tropic of Capricorn are found north and south of the Equator, respectively, and they define the limits of the tropical zone. The Antarctic Circle is situated further south and marks a different climatic boundary.
Pergunta 23 Relatório
All the following are members of the ECOWAS except
Detalhes da Resposta
The Economic Community of West African States (ECOWAS) is a regional political and economic union of countries located in West Africa. Its objective is to promote economic integration across the region. The official member states of ECOWAS include countries in West Africa.
Among the options provided:
Cameroun, however, is not a member of ECOWAS. While it is geographically close to West Africa, it is primarily considered part of Central Africa, and it is a member of the Central African community organization instead.
Pergunta 24 Relatório
The solar system comprises the sun and
Detalhes da Resposta
The solar system is a vast and fascinating system that centers around the Sun, a star that provides light and heat to all the celestial bodies that revolve around it. Understanding what other components make up the solar system is essential for grasping how our cosmic neighborhood operates.
There are eight major planets that orbit around the Sun. These planets, in their order from the closest to the farthest from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each of these planets varies in size, composition, and distance from the Sun, but they all follow elliptical orbits.
In addition to the eight recognized planets, there are also dwarf planets, such as Pluto. Pluto was previously considered the ninth planet until it was reclassified as a dwarf planet by the International Astronomical Union in 2006 due to updated criteria that define what constitutes a planet.
Besides planets and dwarf planets, the solar system also contains a variety of other celestial bodies. These include moons, which are natural satellites that orbit planets; asteroids, which are small rocky bodies primarily located in the asteroid belt between Mars and Jupiter; and comets, which are icy bodies that have eccentric orbits bringing them close to the Sun occasionally.
In summary, the solar system comprises the Sun and eight planets, alongside other celestial bodies such as dwarf planets, moons, asteroids, and comets. Understanding the composition of the solar system helps us appreciate the complexity and grandeur of our cosmic environment.
Pergunta 25 Relatório
Which of the following features is shared by Hong Kong, Java and Manhattan?
Detalhes da Resposta
Hong Kong, Java, and Manhattan all share the feature of having a **high population density**. These regions are known for their concentrated population in relatively small areas. Here is a simple explanation for each:
In summary, the common feature among these locations is their **high population density**, where large numbers of people reside and engage in various activities within limited geographic spaces.
Pergunta 26 Relatório
Detalhes da Resposta
The high population density in the Nile Valley is best explained by the presence of rich alluvial soil. The Nile River floods annually, depositing nutrient-rich silt along its banks, which creates fertile land perfect for agriculture. This fertile land supports farming, which is the primary means of livelihood for many people in the region. The availability of fertile soil allows for the cultivation of crops such as wheat, barley, and other foodstuffs, supporting a large population by providing food resources and encouraging human settlement. This agricultural productivity attracts people to settle, leading to a higher population density. It is not primarily due to climate, migration from Europe, or oil fields.
Pergunta 27 Relatório
Which of the following is a fossil fuel?
Detalhes da Resposta
The term fossil fuel refers to energy sources that come from the remains of ancient plants and animals, buried and subjected to heat and pressure over millions of years. These fuels are primarily composed of carbon and include materials like coal, oil, and natural gas.
Among the options given:
Therefore, the correct answer is Lignite because it belongs to the category of fossil fuels. Lignite is formed from the remains of plants that lived millions of years ago, which makes it a source of stored energy that can be burned for heat and power.
Pergunta 28 Relatório
Detalhes da Resposta
To determine which option is not a proof of the Earth's spherical shape, let's examine each one:
Twilight and Dawn: Twilight and dawn occur when the Earth rotates, and the sun is below the horizon. The gradual increase or decrease in light during these times is due to the atmosphere bending or scattering sunlight. While this phenomenon is observed worldwide, it by itself doesn't directly indicate a spherical Earth. Instead, it emphasizes the Earth's rotation, which is consistent with a spherical shape.
Lunar Eclipse: During a lunar eclipse, when the Earth is directly between the sun and the moon, the Earth casts a shadow on the moon. This shadow is observed as a circular shape, which provides direct evidence that the Earth is spherical.
Aerial Photograph: Aerial photographs, when taken from a sufficient altitude, can show the curvature of the Earth. Photographs taken from high altitudes give visual evidence of the Earth's curved surface, supporting the spherical shape.
Sunrise and Sunset: The occurrence of sunrise and sunset happens due to the Earth's rotation on its axis. As the Earth rotates, different parts of the world experience sunlight and darkness. This rotation is consistent with the global experience of a spherical planet.
Conclusion: While all the listed phenomena have some connection to the Earth's rotation and shape, **twilight and dawn** do not directly serve as a proof of the Earth's spherical shape. They are more indicative of the rotational aspect and atmospheric effects rather than the shape itself.
Pergunta 29 Relatório
Temperatures of adjacent coastlands are reduced when on - shore winds blow over cold currents because the
Detalhes da Resposta
The temperatures of adjacent coastlands are reduced when on-shore winds blow over cold currents primarily because the cold currents influence the temperature of the prevailing winds.
Here's how it works in simple terms:
When winds blow over the ocean surface, they pick up characteristics of the water beneath them. If these winds travel over a cold ocean current, the air they carry becomes cooler. As this cooler air moves onto the coastlands, it brings down the temperature of those areas. This is why coastlands experience reduced temperatures when on-shore winds carry the chill from cold ocean currents.
So, the key factor here is the cooling effect of the cold water, which cools the air above it, consequently lowering the temperature of the coastal regions the wind blows onto.
Pergunta 30 Relatório
On June 21st, when the sun is overhead at the Tropic of Cancer,places in the Northern Hemisphere experience
Detalhes da Resposta
On June 21st, the sun is overhead at the Tropic of Cancer, marking the Summer Solstice in the Northern Hemisphere. This is the point in the year when the Northern Hemisphere is tilted closest to the sun. As a result, places in the Northern Hemisphere experience their longest day and shortest night. This means that there is more daylight compared to nighttime.
To summarize, on this date, locations in the Northern Hemisphere will experience a longer day and a shorter night. This is due to the tilt of the Earth's axis, which maximizes sunlight exposure to these regions.
Pergunta 31 Relatório
Which of the following is not a sea route?
Detalhes da Resposta
The route that is not a sea route is the one involving London, Moscow, and Baghdad.
Here's the explanation:
This is why the route from London, Moscow, and Baghdad is not a sea route.
Pergunta 32 Relatório
The development of hydro-electric power in Nigeria is least affected by the
Detalhes da Resposta
The development of hydro-electric power in Nigeria is least affected by the availability of suitable sites for dams. While suitable sites are necessary for building dams, other factors such as a regular supply of water and high mountains are more critical for hydro-electric power development.
Pergunta 33 Relatório
Which of the following is an effect of rural-urban migration on the source region?
Rural unemployment
Detalhes da Resposta
Rural-urban migration refers to the movement of people from rural areas to urban areas in search of better opportunities and living conditions. One of the main effects of this kind of migration is rural depopulation.
Here's why:
In summary, rural depopulation is one of the primary effects of rural-urban migration as it results in a decrease in the population of the rural areas being vacated.
Pergunta 34 Relatório
Nigeria is located between longitude
Detalhes da Resposta
Nigeria, a country located in West Africa, is situated between the longitudes of 3°E and 15°E. Longitude lines are imaginary vertical lines that run across the Earth's surface from the North Pole to the South Pole. These lines help in determining the east-west position of a particular location on earth. By being positioned between 3°E and 15°E, Nigeria stretches from slightly east of the Prime Meridian, which is 0°, to 15° eastward. This geographical positioning affects several aspects like climate and time zone, making it an important detail in understanding the country's location globally.
Pergunta 35 Relatório
All the following are advantages of the bush fallowing system in West Africa except that it
Detalhes da Resposta
The bush fallowing system in West Africa is not very economical in the use of land. Bush fallowing involves leaving land fallow for several years to regain its fertility, which can lead to inefficient use of land.
Pergunta 36 Relatório
A line joining places having an equal degree of cloudiness is an
Detalhes da Resposta
A line joining places having an equal degree of cloudiness is called an isoneph.
To understand this better, let's break down some related terms:
So, when we are specifically talking about cloudiness, the correct term and line is an isoneph. This is useful in meteorology for visualizing and analyzing patterns of cloud coverage across different regions.
Pergunta 37 Relatório
On June 21st, when the sun is overhead at the Tropic of Cancer,places in the Northern Hemisphere experience
Detalhes da Resposta
On June 21st, when the sun is overhead at the Tropic of Cancer, places in the Northern Hemisphere experience a phenomenon often referred to as the **Summer Solstice**. This day marks the point when the Northern Hemisphere is tilted closest to the Sun. As a result, it receives the most direct sunlight compared to any other day of the year.
During this time, the day is significantly longer than the night. This is because the Sun travels a longer path through the sky, remaining visible for a larger portion of the 24-hour day. Therefore, areas in the Northern Hemisphere experience a **longer day and shorter night**.
This occurrence is most noticeable the further north you go, with some regions near the Arctic Circle experiencing the phenomenon known as the "Midnight Sun," where the sun is visible at midnight.
Pergunta 38 Relatório
Which of the following best accounts for the decline in the importance of rail transport in Africa?
Detalhes da Resposta
The decline in the importance of rail transport in Africa can be best explained by the high competition from road transport. Here's why:
Accessibility and Flexibility: Road transport is generally more accessible and flexible compared to railways. Roads are available in most areas of Africa, including rural regions, allowing goods and passengers to reach their destinations directly without requiring transfer between modes of transport.
Cost-Effectiveness: In many cases, road transport can be more cost-effective because it eliminates the need for transferring goods at several points. The initial investment in road infrastructure and vehicles can also be less than maintaining or upgrading railway networks.
Adaptability to Infrastructure Limitations: Many railways in Africa suffer from outdated infrastructure, which can hinder their efficiency and reliability. On the other hand, road transport can easily adapt to newer roads and infrastructures as they are developed.
Length of Transport Routes: Although Africa is a vast continent, many trade routes within countries or regions are more economically feasible with road transport, especially for short to medium distances.
Overall, while other factors such as the low volume of goods and potential retrenchment threats exist, the dominance and rapid improvement in the road transport sector particularly highlight why rail transport has seen a decline in relevance. The flexibility and economic viability of road transport often make it a more attractive choice for businesses and individuals alike.
Pergunta 39 Relatório
Which of the following regions in Nigeria has an average height of over 100 metres above sea level?
Detalhes da Resposta
The Biu Plateau has an average height of over 100 meters above sea level. The Biu Plateau is a region of high ground in northeastern Nigeria
Pergunta 40 Relatório
One characteristic that distinguishes urban settlements from rural settlements is that
Detalhes da Resposta
One characteristic that distinguishes urban settlements from rural settlements is that urban settlements are areas of secondary and tertiary activities.
Let's break this down:
To summarize, the primary distinction is that urban settlements focus on secondary and tertiary activities, providing goods and services, ultimately making them different in function and character from rural settlements, which focus more on primary activities.
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