The respiratory system needs to exist because most of our body cells are not in contact with the air.

Question

Quizplus · Accepted Answer

The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide, which is essential for the functioning of our body cells. However, most of our body cells are not in direct contact with the air, which is why we need a specialized system to transport oxygen to them.

The Respiratory System Needs to Exist Because Most of Our