Answer:
it is d because CONTRIBUTES to water pollution meaning what gosenwith it and littering the chemical will affect it
It is important to stretch before exercising because for example if you were to be doing a strenuous workout it causes the blood vessels in your legs to expand. Which then causes more blood into your legs and feet. If you were to stop after a while of exercising your heart rate slows down and blood can pool into your lower body which could cause you to possibly faint.
I think the answer is psycholinguists because they help people deal with problems ( personal issues to chronic conditions )
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