Topic Details (Notes format)

Environmental Issues

Subject: General Science

Book: NCERT Biology Class 12

Humans impact the environment through pollution and resource consumption.
- **Air and Water Pollution**:
- Causes and control measures.
- **Ozone Depletion and Global Warming**:
- Effects on climate.
- **Sustainable Development**:
- Conservation strategies.

**Possible Exam Questions:**
1. Explain the causes and effects of acid rain.
2. What is global warming? How can it be reduced?
3. Discuss the role of renewable energy sources in sustainability.
4. How does ozone depletion occur?
5. What are the methods to control water pollution?

Practice Questions

What is the unit of electrical resistance?

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Which organ is responsible for filtering blood in the human body?

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What is the main component of natural gas?

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Which part of the cell contains the genetic material?

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Which vitamin is essential for calcium absorption?

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Which gas is used in fire extinguishers?

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Which part of the human eye is responsible for focusing light on the retina?

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Which organelle is known as the "powerhouse of the cell"?

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Which of the following is a fundamental force in nature?

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Which law states that energy cannot be created or destroyed?

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