Conservation
Akopọ
Once a species is gone, it is gone forever, and its genes go with it. Conservation is the active effort to stop that happening: to manage forests and fish so they renew themselves, to protect species in danger, and to keep ecosystems working. It is part science, part global cooperation, and increasingly urgent.
In this lesson you will define a sustainable resource, explain why species become endangered or extinct, and describe how we conserve them, from protected areas and captive breeding to seed banks. You will also meet the [Supplement] tools of modern conservation, including fishing quotas, AI and IVF, and the genetic danger that small populations face.
Awọn Afojusun
- Describe a sustainable resource as one which is produced as rapidly as it is removed from the environment so that it does not run out
- State that some resources can be conserved and managed sustainably, limited to forests and fish stocks
- Explain why organisms become endangered or extinct, including: climate change, habitat destruction, hunting, overharvesting, pollution and introduced species
- Describe how endangered species can be conserved, limited to: (a) monitoring and protecting species and habitats (b) education (c) captive breeding programmes (d) seed banks
- [Supplement] Explain how forests can be conserved using: education, protected areas, quotas and replanting
- [Supplement] Explain how fish stocks can be conserved using: education, closed seasons, protected areas, controlled net types and mesh size, quotas and monitoring
- [Supplement] Describe the reasons for conservation programmes, limited to: (a) maintaining or increasing biodiversity (b) reducing extinction (c) protecting vulnerable ecosystems (d) maintaining ecosystem functions, limited to nutrient cycling and resource provision, including food, drugs, fuel and genes
- [Supplement] Describe the use of artificial insemination (AI) and in vitro fertilisation (IVF) in captive breeding programmes
- [Supplement] Explain the risks to a species if its population size decreases, reducing genetic variation (knowledge of genetic drift is not required)
Ẹ̀kọ́ Ohùn
Gbọ́ ẹ̀kọ́ yìí nínú áàpù
Àwòrán ọpọlọ
A ti ṣe àwòrán kókó yìí kí o lè rí bí àwọn èrò ṣe so pọ̀.
Ṣí àwòrán ọpọlọ nínú áàpù
Káàdì ìrántí
Ìdánrawò kíákíá lórí ohun tí wọ́n ń dán wò nínú kókó yìí.
Ṣe ìdánrawò káàdì wọ̀nyí nínú áàpù
Akọ̀wé Ẹ̀kọ́
Àkọsílẹ̀ Ẹ̀kọ́ Pípé wà lórí Ohun Èlò Green Bridge
Gba ohun èlò Green Bridge CBT sórí fóònù tàbí kọ̀mpútà rẹ fún gbogbo ilé ìkàwé IGCSE: ìwé ìdánwò àtijọ́, ìlànà ìdíwọ̀n, àwòrán èrò, káàdì ìkẹ́kọ̀ọ́ àti ẹ̀kọ́ ohùn.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Conservation. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- A sustainable resource is one that is: A. very cheap to produce B. produced as rapidly as it is removed, so it does not run out C. never used by humans D. only found in forests Answer: B
- Which is NOT a cause of species becoming endangered? A. habitat destruction B. captive breeding C. hunting D. pollution Answer: B
- Seed banks help conservation by: A. killing pests B. storing seeds as a gene bank against extinction C. increasing pollution D. clearing forests Answer: B
- A closed season conserves fish stocks by: A. allowing fish to spawn and mature before being caught B. using smaller nets C. removing all predators D. adding fertiliser Answer: A
- A small population is at greater risk of extinction because it has: A. too many predators B. reduced genetic variation C. too much food D. more habitats Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Threats to Biodiversity
Identify significant threats to biodiversity
"Biology: Threats to Biodiversity" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/47-3-threats-to-biodiversity. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Preserving Biodiversity
Identify new technologies for describing biodiversity
"Biology: Preserving Biodiversity" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/47-4-preserving-biodiversity. Access for free at https://openstax.org/books/biology/pages/1-introduction
Àwọn àjọ mìíràn ló tẹ̀ wọ́n jáde lábẹ́ ìwé àṣẹ ṣíṣí, a sì dá wọn lọ́lá bí wọ́n ṣe béèrè. Àwọn ìjápọ̀ ń ṣí ojú òpó wọn.
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Conservation? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
Ṣe igbasilẹ ohun elo naa lori Google Playstore
Gbogbo ohun ti o nilo lati ṣe dara julọ ninu JAMB, WAEC ati NECO.
