Which are examples of negative feedback? Select three options.

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

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

Explanation:

Hope this helps.

2020

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

Explanation:

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."