What do you mean by immunization?

Models are non-visual ways of coummincating how someone thinks about something in the natural world

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons