Asap will give

why don't most parasites kill their host?

atleast 2 sentence response

Because they think that they are too humble to kill hosts. They think, "We will let Steve Harvey live."

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

the correct answer is:

a population changes in response to a change in the environment.