Hormones is the term you are looking for, but I may be wrong
<span>a bird flying from a tree</span>
For the last question it's either C or D.
I think that the Risk assessment depends on medicine. Here's some extra details: the PROCESS by which HAZARD, exposure and risk are determined. The four steps of risk assessment are Hazard identification<span>Dose-response assessment
Exposure assessment
Risk characterization</span>
Answer:
all organisms need food for the energy required to live and grow.
