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

Which gas is most abundant in Earth’s atmosphere?

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Which gas is known as "laughing gas"?

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Which element is the most abundant in the Earth’s crust?

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What is the main component of natural gas?

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What is the primary function of white blood cells?

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Which gas is commonly used in balloons to make them float?

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What is the smallest unit of life?

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What is the unit of frequency?

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Which planet is known as the "Red Planet"?

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Which vitamin is essential for calcium absorption?

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