Question

which gas is present in a very small quantity in air but is very important for the plants and how?​

Answer 1

CO2

Explanation:

It is present in atmosphere in percentage of 0.3%

and play a important role in photosynthesis.

Answer 2

Answer:

Carbon dioxide

Explanation:

As the composition of CO2 in air is 0.3% and it is essential for the process of respiration and photosynthesis.