Page 85 - EVS Class 04

* Anything that is useless and unwanted is called waste material.
* The two types of wastes are- biodegradable and non-biodegradable.

* The wastes can be disposed off by open dumping, land filling and
incineration.
* Composting is a good method of disposing off biodegradable wastes.

* We can solve the problem of waste disposal by following the three R’s–
Reduce, Reuse and Recycle.
* It is the responsibility of every individual to keep one’s surroundings clean.

A. Answer the following questions.

1. What is garbage?

2. What are the two types of wastes?
3. Why is open dumping a harmful method of disposing garbage?

4. Why do incinerators cause air pollution?

5. What is composting?

6. What are three R’s?
7. Name some agencies involved in garbage disposal.

B. State whether the following statements are right or wrong .
1. We should not reuse the waste materials.

2. We should keep our surroundings clean.

3. Bio-degradable wastes rot and mix with the soil easily.

4. The sweepers collect the garbage from our homes.

5. Wastes should not be separated before the disposal.
6. We should use cloth napkins.

7. There are three types of wastes.

C. Write short notes on the following.
1. Reduce :

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EVS-4
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