The body's primary source of energy is the nutrients from food and also water but mostly food <span />
Answer: OT
Explanation: OT stands for Online Tardy, which is when you are late for your class, and therefore another teacher has to tell you what you missed.
C. that is your answer because as your heart contracts, blood flows and IF your heart is not strong enough, it will be hard to breathe.
His skin was the line of defense that was broken. Hope this helps.
Opiates, a class of drug.
