Question

7.
is the life breath gas. To increase its percentage we should ...
8.
The use of energy-giving substances such as
and oil
oil rele
Qases​

Answer 1

Answer:

7 ka hoga

We should plant trees to increase percentage of life gas.

8 ans.

Answer 2

Answer:

7.oxygen

we should not cut trees

Explanation:

8.carbon dioxide