Why do higher plants and animals need a transportation system ?
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33
Most multicellular plants and animals have too small a surface area to volume ratio so diffusion would be too slow to provide the necessary molecules. Therefore, they require a system to transport nutrients and waste products around the organism.
MoUxI2005:
TQ but can you extend it a bit . Actually it's a three mark answer ...so..
yrr thanx to do
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Answered by
14
this correct answer
PLZZ give thanx
PLZZ give thanx
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