When the cell concentrates potassium against the natural tendency of matter it is proforming

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

the answer is definitely a

1) a

2)c

3)a

4)c

5)b

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