B. Inflammation occurs when red blood cells release chemicals into the blood.
Inflammation is the body’s normal response to fight injuries and infections. Immune cells, clotting proteins and signaling molecules are released when a pathogens and irritants. The cardinal signs of acute inflammation are pain, redness, immobility, swelling and heat of damaged area.
D
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Bc if u don't then ppl will do illeagal stuff with it
Answer: b. Carry on a conversation
Explanation:
There are different levels of intensity when exercising and these require different energy levels and different amounts of air coming into the lungs.
The CDC notes that if you are exercising at a moderate level, the energy and oxygen requirements will not be as high so you can be able to talk to other people without being short of breath from needing more of the oxygen and energy that is being used in the talking.
Chest pains and trouble breathing
