Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
Maybe biosphere and geosphere?
Ok let do the formula. V=m/d=408/11.34= 35.98 v=35.98ml so ther is 35.98 ml place in a lead hope u love my answer
Explanation:
Biologists have discovered that the reason behind the decline of fireflies is habitat loss, light pollution and excessive light; excessive light can disrupt the insects mating ritual.
your answer should be “interspecific competition”
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