Dolphins hear with:
A) their ears
B) receptors that run through the length of their body
C) their lateral lines
D) their jaw

B

Explanation:

they use echolocation and it is decifered through that prosses

the cell cycle is the final answer! : )

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.