The answer is True, you don't want the blood to go the opposite way<span />
Answer:
You must know how much the heart beats in one minute.
Explanation:
Usually heart rates are in 'BPM' form, so you don't need to change it. But if so, you must know how many beats are in one minute to convert it. Hoped this helped.
Possibly a mosquito. If not that a spider, or a beetle. If it swells I would go to the hospital
Answer:
I will say chemical which is drug, in this aspect we should be looking at drug abuse. Too much misuse of drugs can affect the brain,mainly causes of mental illnesses can be traced to the brain. An example of drug abuse is the intake of cocaine to make one high. Symptoms include being unreasonable,nuisance and even paranoia.
