The different functions of your body and different ways your body acts.
Puberty, and there are many websites and books that offer information so you know what to expect.
I think it might be d. the lungs expand and contract which increases the rate of blood flow so the muscles can convert and store energy
Answer:
By the production of white blood cells and antibodies.
Explanation:
The immune system's job is to identify foreign object and to make antibodies and white blood cells to fight said virus.
i think its B dont come for me if not tho
