Question

(a)The oxygen present in the air is used for .......and......
(b)The layer of air surrounding the earth is called.......
(c)The .........gas present in the air is used by plants for making their food by the process
of photosynthesis.​

Answer 1

Answer:

a. Breathing

b. Atmosphere

c. Carbon dioxide gas

Answer 2

Answer:

a) respiration,burning/combustion

b) atmosphere

c)carbon dioxide