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
Answers
Answered by
0
Answer:
7 ka hoga
We should plant trees to increase percentage of life gas.
8 ans.
Answered by
0
Answer:
7.oxygen
we should not cut trees
Explanation:
8.carbon dioxide
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