1.Which of the following could be the goal of a negative feedback loop?

options:

to enhance an action of a stimulus

to release hormones

to signal receptors to take in sensory information

to return a substance to a normal level

2.When are feedback loops used in any system?

options:

When the system needs more of something.

When the system needs an enhanced outcome.

When a stimulus causes the system to move out of balance.

Only in emergency situations.