Cells in multicellular organisms have many different sizes and shapes. these differences in cells is called cell specialization. cell specialization allows cells to
a. perform different functions.
b. reproduce.
c. be less complex.
d. respond to their environment.

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

Ineed a little . why do you think there is a basic difference between the kinds of fertilization most common in aquatic and terrestrial animals?