What is the percentage of `CO_2` in exhaled air ?

What is the percentage of oxygen in the exhaled air ?

What is the percentage of argon in air ?

What is the percentage of argon in air ?

Observe the table and answer the following question. What is the percentage of water vapour in exhaled air ?

The percentage of CO_2 in air is -

(b) What is the percentage CO_(2) in (i) Inspired air and (ii) Expired air?

what is the percentage of nitrogen in the air?

What is the percentage of air in the soil?

What is the percentage of air in the soil?