Summary
Humans rely on the environment for natural resources, but their activities can negatively impact it through resource depletion, deforestation, pollution, and global warming.
- Depletion of Natural Resources — The use of resources faster than they can be replenished. Example: Overfishing can lead to the extinction of fish species.
- Deforestation — The removal of trees to clear land. Example: Cutting down trees can lead to habitat loss and soil erosion.
- Pollution — The introduction of harmful substances into the environment. Example: Smoke can form acid rain, damaging buildings and ecosystems.
- Global Warming — The increase in Earth's average temperature due to trapped heat. Example: Melting ice causes sea levels to rise, affecting coastal areas.
Exam Tips
Key Definitions to Remember
- Depletion of Natural Resources
- Deforestation
- Pollution
- Global Warming
Common Confusions
- Confusing renewable and non-renewable resources
- Misunderstanding the causes of global warming
Typical Exam Questions
- What is deforestation? The removal of trees by burning or cutting down to obtain land.
- How does pollution affect water bodies? Pollutants can poison organisms and lead to oxygen depletion.
- What are the effects of global warming? Melting ice and changes in weather patterns.
What Examiners Usually Test
- Understanding of how human activities impact the environment
- Ability to explain the effects of deforestation and pollution