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Our skin has a defense system that makes us aware of annoying things that touch our body. Sometimes that annoying thing is just a fly. But sometimes we come into contact with something like poison ivy that causes a reaction in our skin. Poison ivy or bug bites cause an allergic response that keeps our skin itchy for a while.
It is almost as if poison ivy or bug bites make our skin think that something constantly there irritating our skin. It is best to prevent these reactions. So watch out for poison ivy and use the bug spray your mom bought you for summer camp.
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Our blood is essential for mosquitoes as it provides the protein mosquito eggs need for development. While fertilization occurs only after a blood meal, the blood does not fertilize the eggs. Mosquitoes reproduce sexually, and they eat blood. Often, it is only the females which drink blood, and they use this food as fuel for creating eggs.
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To oil, lube, and filter the eyes.
Blinking, as opposed to batting, our eyes automatically supplies two forms of moisture to our eyes, to keep them from drying out, and to keep foreign matter from entering and irritating our eyes. Eyelids themselves, our built-in "wind-shield wipers," are merely folds of skin, controlled by muscles capable of expanding and contracting so rapidly, that blinking does not impair our vision.
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SCRATCHING an itch, sneezing, crying and blushing ...they are just some of the simple little things we all do without even thinking about it. But now the true reasons behind these common habits have been revealed by scientists.
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Most agree that we laugh when we find something to be humorous, yet different reasons exist for what we find to be humorous. Additionally, different things are humorous to us at different stages of life.
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