Question

as we intake other different gases including oxygen why we exhale only carbon dioxide​

Answer 1

Answer:

BECAUSE CARBON DIOXIDE IS NOT USEFUL OF US..

OUR BODY PRODUCES MANY TYPES OF GASES.

BUT WE NEED THIS GASES AND ACIDS LIKE HCL

Answer 2

Explanation:

According to Respiration in our body we inhale Air which contains mixture of gases.

when our body respires , our body uses the oxygen n gives the end product as carbon dioxide and thus oxygen is used for respiration thus the carbon dioxide is release by expiration through lungs.