the answer is definitely A.
Crust and atmosphere earth outer crust and the mantel is the most important thing about the mantle are is what it is made up if and last is the core
Answer:
B. It is too slow to observe directly
Explanation:
They move too slow to be able to observe how they move.
I hope it helps! Have a great day!
bren~
Answer:
How hard the blood pushes on the inside of the blood vessels is called? BLOOD PRESSURE
The total amount of blood the heart pumps in one minute is called ?
CARDIAC OUTPUT
When blood vessels open wider during exercise, they are said to ?
DILATE
How many times your heart beats in one minute is called ?
HEART RATE
The force that can put unhealthy tension on the heart as it is pumping is called ?
BLOOD PRESSURE
The amount of blood the heart pumps out in one beat is called?
STROKE VOLUME
Explanation:
