Answer:
B
Explanation:
Oxygenated blood enters the left atrium
Answer:
B and C
Explanation:
Mental, emotional and physical health make up the health triangle.
Answer:
You can think of Free radicals as some exhaust from a combustion engine. Get this picture: If an engine is running, it is throwing off some exhaust. Also, if you want to compare this to other things, you can compare it to the human body, as you digest food, breathe, and as you exercise you're producing free radicals. Just by simply living, you are producing them every single second of your life.
Explanation:
Id say that it is B, Behavior. We have the most control over how we act, no matter how we were raised
Activated when they recognize small components of antigens
