Cells form the body's skin, inner linings, and glands.

a. epithelial
b. muscle
c. nerve
d. fat

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

_is a product of the first stage of photosynthesis. atpglucosecarbon dioxidewater