Ruunig and it is this becasue it makes your muscles retrct over and over agin
Answer:
I believe it's asexual reproduction??
Explanation:
A) the exchange of gases throughout the body
3 Americans
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Answer: 
- Lead, cobalt, arsenic and selenium appear to pass the placental barrier by a diffusion mechanism. It was also found that the mercury levels in cord blood were almost double those of the mother, suggesting that the foetus may act as a filter for the maternal mercury levels during pregnancy.
Explanation:
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