Last updated on December 6th, 2021 at 09:49 pm
Class 4 Pollution Que and Ans
Class 4 Pollution Que and Ans for CBSE / NCERT / ICSE Board students.
Answer the following questions in Short:
What is pollution?
Ans: Pollution is the unwanted change of air, water or soil that degrades the quality of the environment.
Ans: Pollutants are substances that pollute air, water, and land.
How many types of pollutions are there?
Ans: There are mainly 4 types of pollution
- Land pollution
- Soil pollution
- Air pollution
- Sound pollution
What is land pollution?
Ans: Land pollution refers to the mixing of harmful substances in soil.
Define soil erosion.
Ans: Soil erosion occurs when water from the rain or wind washes away the top soil.
What is water pollution?
Ans: Water pollution is caused by household, industrial, and agricultural wastes.
What is afforestation?
Ans: Afforestation refers to the planting of trees in areas that are barren or have been deforested.
What is biodegradable waste?
Ans: Wastes that decompose easily are referred to as biodegradable waste.
Name two non-biodegradable waste.
Ans: Plastic and rubber are non-biodegradable wastes.
Ans: All living things and non-living things that exist naturally on earth make up the environment.
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