Which are examples of negative feedback? check all that apply.

a child whose thymus gland is building an immune system that gets stronger each day

when someone’s adrenal gland reacts to a scary movie by secreting hormones that make the heart beat quickly

when someone's pancreas stops producing the hormone that lowers blood sugar because the person hasn't eaten recently

when someone’s pancreas hormone increases every time they eat, but decreases

when they aren’t eating

when a person takes calcium supplements so a gland will stop secreting a hormone that pulls calcium from the bones