Answer:
If something happens to one friend you have another one that can help you. The more people you're with, the safrer you are.
Explanation:
Answer:
contamination
Explanation:
It just keeps on going with the genetics' you want to stop happening. Different defects in the gens.
True, Following the 8x8 rule is recommended in living a healthy life.
No the answer is not A because all your mucus builds up in your respiratory system not respiratory secretion. <span />
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>
