The respiratory zone is the site of 02 and CO2 exchange with the blood;
site of gas exchange.
Carbohydrate is one of the most essential molecules in regulating the bodily activities. This contains hydrogen to oxygen ratio of 2:1. One of its purposes is to provide energy.
Answer:
C. Regulate how much carbon dioxide a country can emit
Answer:
PCOS
Explanation:
PCOS stands for polycystic ovarian syndrome. PCOS is a condition in which the ovaries have multiple follicles that do not ovulate to release an egg due to hormonal disturbances. it is a common cause of infertility.
