Answer:
8: Superior vena cava
13: Aorta
11: Pulmonary valve
10: Left Pulmonary veins
9: Right atrium
12: Left atrium
7: Tricuspid Valve
6:Right ventricle
5: ?
3:Bicuspid valve
4:Chordae tendineae
2:Papillary muscle
1: Interventricular septum
Explanation:
Sorry if it's not right
B. Protective Factors
I would say that the answer is B because when your life is in risk, you need someone with you to stay and make sure everything is okay.
Drugs that increase brain and body activities are called stimulants.
Hope I helped! <3
The answer is: [C]:
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"sustains life and keeps body systems in good repair."
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The four purposes of government laws and policies are to maintain social order in health government, also provide public services that can help the other people. Another thing is to make economic decisions tougher and this also provide national security.
