The wrinkles signify that the brain is compressed which makes it take up less space in your head which makes it more eficent I guess.
Protist<span> manufacture their own energy by photosynthesis (using sunlight)</span>
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Hmmm i think its the third one because men only have 1 x chromosome therefore without the other one if the x chromosome on a men carries a disorder it will show because there is no other chromosome to balance it out and in women the disorder has to show on both X chronosome (and its rarer) for a disorder to appear therefore women having a second X chromosome is effectively a protection
