Study Notes
Habitat destruction is the process where natural habitats are altered or destroyed, reducing biodiversity and impacting ecosystems.
- Biodiversity — the number of different species that live in an area. Example: A rainforest with a wide variety of plants and animals.
- Deforestation — the clearing of forests for land and resources. Example: Cutting down trees for wood and agriculture.
- Soil Erosion — the removal of the topsoil layer due to lack of vegetation. Example: Soil washing away during heavy rains after trees are cut down.
- Marine Pollution — contamination of marine environments by human activities. Example: Oil spills affecting sea life.
- Desertification — the process by which fertile land becomes desert. Example: Land becoming barren after deforestation.
Exam Tips
Key Definitions to Remember
- Biodiversity: The number of different species in an area.
- Deforestation: Clearing of forests for land and resources.
- Soil Erosion: Loss of topsoil due to lack of vegetation.
- Marine Pollution: Contamination of marine environments by pollutants.
Common Confusions
- Confusing deforestation with desertification.
- Misunderstanding the impact of habitat destruction on food chains.
Typical Exam Questions
- What is biodiversity? Biodiversity is the number of different species that live in an area.
- How does deforestation lead to soil erosion? Without trees, the soil is exposed to rain and washes away.
- What are the effects of marine pollution? Marine pollution can kill sea life and disrupt ecosystems.
What Examiners Usually Test
- Understanding of how human activities cause habitat destruction.
- Ability to explain the effects of deforestation on the environment.