Answer:
<em>Antibodies attach to a specific antigen and make it easier for the immune cells to destroy the antigen. T lymphocytes attack antigens directly and help control the immune response. They also release chemicals, known as cytokines, which control the entire immune response</em><em>.</em>
There may be a ruptured blood vessel inside your nose. Have an appointment with the ENT to double check you don't have anything serious. :)
I believe the answer to this would just be called an energy balance.
Answer:
I think soccer
Explanation:
4.0 Billion people play soccer worldwide