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The skin is an ________ part of your body and it’s largest ______. You have _____ layers of skin which act as a barrier _______disease, _______ and the sun’s harmful rays. The _________ of your skin are also very _________: it keeps you ______ or cool; it prevents your body from ______ too much water;
essential
organ
three
against
poisons
warm
losing
complex
functions
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