hey can someone tell me which body systems they use (at least 4 or 5) and explain to me what the body system are doing? if that makes sense, sorry if it’s a lot

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

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred