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Filtration-Filtration is the movement of water and solute molecules down the concentration gradient

Active Transport-Active transport is the movement of molecules across a cell membrane in the direction against their concentration gradient 
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Active transport is a method by which cell transports materials against the concentration gradient by spending energy.
were as 
Filtiration is a movement of water molecules down the concentration gradient.
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nice dude
can u give me an example of filtration