A low amount of calories or no calories
- If it's a pill or something, someones body could react badly to it
- Age definitely effects it
Answer:
D) four.
Explanation:
The two atria hold the blood that circulates away from the heart. The heart has four one-way valves, which open and close with each heartbeat. The tricuspid valve and the mitral valve are located between the atria and allow the blood to flow from the atria to the ventricles. Also you don't have to but mind marking Brainliest?
Answer:
woahhh r u a kpop stan XD
Explanation:
yes he is the meme maker XD
