Question

29
C. Give (V) against true statement and (x) against false statement.
1. About 20.946% is the gas oxygen.
2. Air cannot occupy space.
3. Earth is surrounded by a blanket of air called the atmosphere.
4. Air is needed for burning.
5. Unlike humans, animals do not face devastating
effects of air pollution.​

Answer 1

Explanation:

1. true
2. false
3. true
4. true (oxygen is needed for burning)
5. false (humans and animals both face devasting steps of air pollution)