Answer:Eating salty food causes what kind of thirst
Answer: Depression
Explanation:
The primary disturbance comes before Secondary disturbance. During the first stage, issue is not much given thought until it graduate into a more pressing life threatening issue which is the secondary disturbance.
This is what I think.
The phenotype is the type of trait that can be physically observed in an individual. Examples include hair colour, eye colour or height.
The main purpose is communication. like when you stub your toe , your nervous system communicates to your brain to react and have pain
