Answer:
4
Explanation:
2 atria and 2 ventricles
hope it helps
and ur welcm
:)
1, and 3,
https://www.mayoclinic.org/first-aid/first-aid-severe-bleeding/basics/art-20056661
it's dental hygienist
It is important to improve muscular strength to reduce the risk of injury while doing physical activity. Improving muscular strength also improves stability and balance.
