BIOLOGY POLLUTIONCBT

BIOLOGY CBT – POLLUTION

Time: 0 s

POLLUTION → AIR | WATER | SOIL → Effects on Living Things

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Theory Questions (Click to Reveal Answers)

1. Define pollution and mention its major types.

Correction: Pollution is the introduction of harmful substances into the environment. Major types are air, water, and soil pollution.

2. Explain two effects of air pollution.

Correction: Air pollution causes respiratory diseases like asthma and bronchitis, and also leads to acid rain which damages crops and buildings.

3. Describe how water pollution affects aquatic life.

Correction: Pollutants such as oil and chemicals reduce oxygen levels, poison fish, and destroy aquatic ecosystems.

4. State three methods of controlling soil pollution.

Correction: Proper waste disposal, recycling plastics, and reducing use of chemical fertilizers and pesticides help control soil pollution.

5. Discuss the importance of pollution control.

Correction: Pollution control protects human health, preserves biodiversity, maintains soil fertility, ensures clean water supply, and prevents climate change.