There Are Various Impacts Of Desertification, Deforestation And Climate Change On Fragile Environments
Overview
Degraded land, cleared forest and a warming atmosphere are not abstract environmental problems. They show up as a failed harvest, a family that moves to the city, a fishing village that loses its reef and a coastline that has to be defended or abandoned. This lesson is about consequences, and about sorting them clearly.
You will work through the social, economic and environmental impacts of desertification and of deforestation, then examine what climate change is doing to fragile environments and to the people who depend on them. The skill being built is classification: putting each impact under the right heading, and showing how one impact triggers the next.
Objectives
- Social, economic and environmental impacts of desertification (reduced agricultural output, malnutrition, famine, migration)
- Social, economic and environmental impacts of deforestation (loss of biodiversity, contribution to climate change, economic development and increased soil erosion)
- Negative effects that climate change is having on fragile environments and people (rising sea levels, more hazards, ecosystem changes, reduced employment opportunities, changing settlement patterns, health and wellbeing challenges, including food supply)
Mind map
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Flashcards
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Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on There Are Various Impacts Of Desertification, Deforestation And Climate Change On Fragile Environments. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which of the following is an environmental impact of desertification? A) Rising rates of malnutrition among children B) Sediment silting up downstream reservoirs C) Young adults migrating to cities for work D) Farm incomes falling as yields decline Answer: B
- Coral bleaching occurs when corals A) are buried by sediment from rivers B) expel the symbiotic algae living in their tissue under heat stress C) grow too quickly in warm water D) are broken by storm waves Answer: B
- Roughly what is the current rate of global mean sea level rise measured by satellites? A) 0.4 mm per year B) 4.4 mm per year C) 44 mm per year D) 440 mm per year Answer: B
- Which of the following is listed in the specification as an impact of deforestation that can be positive for a country? A) Loss of biodiversity B) Increased soil erosion C) Economic development D) Contribution to climate change Answer: C
- Why does deforestation increase flood peaks downstream? A) Trees release water into rivers when they are cut B) Less interception and lower infiltration send more rainfall to the river as rapid surface runoff C) Cleared land absorbs more rainfall than forest D) Rivers flow faster in cooler conditions Answer: B
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