There are two important regions of a lipid that provide the structure of the lipid bilayer<span>. Each lipid </span>molecule<span> contains a hydrophilic region, also called a polar head region.</span>
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macroevolution or microevolution
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bicycle I may be wrong sorry
C)fossil aging and no i did not use google i knew this from 7th grade
All organisms need water to transport chemicals into their cells
