Answer:
I think it is C but I'm not 100% sure
The respiratory system works with the digestive and circulatory systems to make cellular respiration possible. During cellular respiration, your cells use oxygen and glucose to release energy. Carbon dioxide is a waste product of the process. Carbon dioxide must be removed from cells.
Info from: Google lolz.
Answer:
Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in your blood. Without this balance, nerves, muscles, and other tissues in your body may not work normally.
Answer:
It's a new environment.
Explanation:
People need to adapt to their surroundings if they are introduced to something new.
That's a hard one but I would go with A unwanted transpitation. Hope that helped :)
