Viruses have many things in common with living organisms, but they are not actually considered living. Why?.

-Viruses can't reproduce by themselves. They require a host animal to do so.

-Viruses are not made of cells

-They can't keep themselves in a stable state (regulate temperature)

-They don't grow

-They can't make their own energy

Hope this helps :)

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production