Summary
Habitat destruction is the process where natural habitats are rendered unable to support the species present, leading to a loss of biodiversity. This occurs due to human activities like deforestation, pollution, and resource extraction, which disrupt food chains and ecosystems.
- Biodiversity — the number of different species that live in an area
Example: A rainforest with thousands of plant and animal species. - Deforestation — the clearing of forests for land and materials
Example: Cutting down trees for timber 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 — transformation of fertile land into desert
Example: Land becoming barren after deforestation.
Exam Tips
Key Definitions to Remember
- Biodiversity: the variety of species in a particular habitat
- Deforestation: the removal of trees and forests
- Soil Erosion: the wearing away of topsoil
- Marine Pollution: contamination of ocean environments
Common Confusions
- Confusing biodiversity with the number of individual organisms
- Thinking deforestation only affects trees, not the entire ecosystem
Typical Exam Questions
- What is biodiversity?
The variety of different species in an area. - How does deforestation lead to soil erosion?
Without trees, soil is exposed to rain and washes away. - What are the effects of marine pollution?
It harms sea life and disrupts marine ecosystems.
What Examiners Usually Test
- Understanding of how human activities impact ecosystems
- Ability to explain the consequences of habitat destruction
- Knowledge of specific examples of habitat destruction effects