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.
Answer:
Sewing of learning to bake perhaps
Answer:
the answer would be A
Explanation:
without medical speciallization what tech would we use to cure people?
Plants because they go through photosynthesis

Mortality rate, or death rate, is a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.