OXIDES is your answerrrrrrr !!!!!!!!
Answer:
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Explanation:
environment plays an important role in the healthy living of human beings. it matters because it is the only home that humans have ,and it provides air, food and other needs. Humanity's entire life support system depends on the well -being of all the environment factors.
I know its not d but it might be c or a
When the body works in the opposite direction it is know as Negative feedback