When you take blood pressure, it is expressed in a fraction. The top number of that fraction is systolic pressure- the amount of pressure in your arteries during contraction of your heart muscle... I hope this helped! :)
In terms of human evolution, the sagittal crest was usually more pronounced and larger in older and robust species compared to younger or gracile species.
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Answer:
the skin cells prevent germs from coming in our bodies
Explanation: