Answer:
True
Explanation:
Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
Answer:
the answer would be A
Explanation:
without medical speciallization what tech would we use to cure people?
Answer:
During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration.
Explanation:
I want to say a because you’re choosing one suited for you and your comparing them to see which one fits you ? But if not then d
Answer:
You have to answer that for yourself.
Explanation:
Some people would say having a big family or finding true love. Others would say business or ruling the country. You have to decide what you think the meaning is.
