What are signs and symptoms of night blindness

Emotional signs of stress include aches and nausea

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

The environments condition has an affect on the inhabitants true or false