Answer: Aerobic
Explanation: Aerobic means that it involves or requires oxygen.
The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Answer:
True
Explanation:
Those that are underfed and underweight suffer from protein and lack the nutrients in there body and those that are overfed and overweight can suffer from many things including diabetes, heart disease, and certain cancers.
For every action there is an opposite and equal reaction
Every object not in motion stays that way unless acted upon. Any object in motion will stay at the same speed unless acted upon
The force acting on an object is equal to the mass of that object times its acceleration
