Page 91 - SST Class 05

XERCISE

A. Tick (3) the right option :
1. The earth’s environment provides ____________ conditions for life to exist.
(a) favourable (b) unfavourable (c) none of these
2. Environmental crisis is created by ____________ .
(a) excessive consumption of natural resources

(b) pollution
(c) both of these
3. ____________ waste rots and mixes into the soil.
(a) biodegradable (b) non-biodegradable (c) none of these
4. The 3-R’s formula comprises reuse, ____________ and resell.
(a) reaction (b) recast (c) recycle

B. Answer the questions briefly :
1. How does the environment give us suitable conditions to live?
2. How do people harm the environment?
3. How is water pollution caused?
4. Differentiate between biodegradable and non-biodegradable waste.

5. What do you understand by the 3-R’s formula?

Activity

v Suggest any four ways to conserve the environment :
1. __________________________________________________________________________________

2. __________________________________________________________________________________
3. __________________________________________________________________________________
4. __________________________________________________________________________________

Environment and You
v Look in the waste bins in your school and house. Now, make a list of any five items each.
Write against each B for biodegradable things and N for non-biodegradable things :

At Home B/N At School B/N

Our Environment 91