All of the following are environmental factors that affect human development except a. chromosomes b. healthy eating habits c. economics d. living conditions

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

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

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist