Answer:
valves
The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction.
Answer:
It must be high do to the gravity
Explanation:
There is no sound in space because there is no medium to move it. However i think the big bang can still been seen in the form of background radiation but i am unsure.
<span>If Jack is filing married-filing-separate he would report $76,000 gross income as head of household.</span>