Explain the importance of active transport in humand and plants

Hey

Active transport is important because it allows the cell to move substances against the concentration gradient.

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Active transport is important because it's essencial for the movement of nutrients and substances all around the body and plant

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.