Definition: These are smaller parts of the arteries and help to deliver oxygen to the cells and also regulate blood pressure.
Example: Many of these are so small that they cannot be seen without a microscope.
Term:?

they are known to reach a speed of 21 miles per hour

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.

atp is used for energy.