by 
hulagirl
ANSWERS: 2
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Consider this......the sperm fertilizes an egg...a zygote is formed.....it divides until it reaches a stage called as 'bastula'....the new genetic code codes for newproteins.....it gradually divides more n reaches a stage called as the 'gastrula'.....more proteins are coded by the genes.....hence new cell which are formed undergo differentiation and which ultimately leads to the formation of tissues and organogenesis.....and ta-da.....an embryo is formed which further develops into a baby n then an adult with full funtional 'skin cells'. So, skin cells are well adapted to their funtion because our genes, in the long run of their evolution, have expressed for them, to be so in nature. Hope that helps..... God bless Peace.
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I think he wanted specifics, like "skin cells have an epidermis, which protects the physically sensitive layers below it" or "skin cells absorb the damage cuased by UV rays, so that your other organs dont get hurt"
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