D
Question 3
A catalyst is considered as a reactant in a chemical reaction.
o True
o False

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

Which body region are part of the cephalic region?

Agroup of organisms that changes over time is said to