People in this pandemic have lots on their mind these days. Causing people to stress, using stress management can give you ways to not feel it as often. People take it because they have more things to do and to pay for and that can really get to you at times. So having stress management classes can help clear your mind and be better.
Please note I can only make out some of this, so here's the answers I can see-
Answer #5:
Left atrium, right atrium, left ventricle, right ventricle.
Answer #10:
1.2-1.5 gallons.
Answer #8:
White blood cells fight and kill off diseases.
I'll add more as I get it
EDIT!
Answer #4:
They assist in clotting your blood
Answer #14:
O, B, A, AB.
I think rotation?
sorry if it doesn't help i'm not entirely sure
