A. Oxygen, this is why it is very important to keep breathing while exercising.
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
Explanation:The body's circulation is an essential link between the atmosphere, which contains oxygen, and the cells of the body, which consume oxygen.
Nah, you cant live without both . You breathe in Oxygen, Out carbon dioxide .And if we didn't have air, we would not have gravity .
Answer: True.
Explanation: By giving your body proper nutrition and taking care of it, it will respond well. This includes the skin, which will look healthier with proper care.
I looked it up and I think the answer is B. Epididymitis.
Good luck :)
