Answer:
Respiratory system
Explanation:
the human respiratory system is a series of organs responsible for taking in oxygen and carbon dioxide the primary component is the lungs.
The first part of two is heat, not temperature, once that is cleared up: starting from 3: temperature, concentration, collisions, catalytic converter, surface area
Explanation:
carbon dioxide is it gas that is present in the air plants collect carbon dioxide through tiny holes called Stomates. during the process of photosynthesis, Stomates are also used to expel a gas called oxygen. Oxygen is very important for animals like human -- we need it to breathe !