It weakens the immune system making it unable to defend itself against viruses and it also attacks the immune system..
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Answer:
First, it transports blood with oxygen and nutrients to cells all over the body. Second, it picks up waste products from the cells to be transported out of the body, and it takes the deoxygenated blood back to the lungs so it can regenerate.
Magnesium Phosphate is the answer
Answer: genetics and mutation generate some of the variety that natural selection acts on
Explanation:
