homeostasis

Question 1

homeostasis

Answer 1

maintaining (relatively) stable internal ,
environment. even though environment is changing ;

Question 2

negative feedback

Answer 2

the body’s mechanism for reversing a change so that it returns back to the optimum.

Question 3

positive feedback

Answer 3

amplifying or magnifying the change or output
e.g. The release of oxytocin from the posterior pituitary gland during labor