What causes populations to complete ?

Answer

Populations compete for resources. They compete for the basic neccesities of life such as food, water, shelter and clothing. When the populations get increased, the resources get decreased and that is why populations compete with eachother

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.

a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production