Answer:
The main function of the kidney is to help regulate everything. So this means pH, vitamins, etc. Kidneys are also useful for filtering vitamins and nutrients.
The best way is to just relax and try to act naturally. Just be calm and try to make it a bit funny to hide fear. :)
Answer: Yes the ozone layer sits at the top to protect us from harmful UV rays from the sun.
Explanation:
It can offer protection to the brain, it can collapse under stress, and it can provide attachment sites for teeth.
