In cell membrane phospholipids are formed in a bilayer , in which the non polar termed as hydrophobic are present in the interior of bilayer to shield it from water , and polar region termed as hydrophilic is present outward to interact with water inside or outside the cells.
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Answer: It indicates the direction of the reaction
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If it is hot water than than it will expand an if it is cold water than it will shrink
It makes farmers preform more tasks by hand.
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