Question

Why do we need respiration?

Answer 1

to inhale oxygen and exhale carbon dioxide (cellular respiration)

Step-by-step explanation:

Glucose (food) + Oxygen (breathing) ---> carbon dioxide (free by lungs) + water + ATP

Answer 2

When we breath, we are making respiration. As me are doing respiration, a lot of glucose (we get from food) is turning into ATP, and that is energy; the energy to make cells function. That's why respiration, is important.

Step-by-step explanation:

Glucose (food) + Oxigen (breathing) ---> carbon dioxide (free by lungs) + water + ATP