SPARE PARTS
Humans have evolved to become less hurting the last past six million years or so, but we still have those clumps of fur above our eyes. Beyond their Role in our facial expressions, eyebrows act like natural sweatbands preventing rain and sweat from running directly into our eyes.
ACCORDING TO SCIENCE : eyebrows acts like safeguards from preventing water or sweat by which our eyes can be protected. As same as eyelashes also defence from the dust, macro-bacteria by which our eyes can be protected. Eyes combined with eyebrows,eyelashes and blackball it's all subject we called as EYE.
WHY DO MEN HAVE NIPPLES?
They were before you were even born. Human embryos in the womb develop according to a blueprint that's the same for males and females. Eventually, the embryos begin to take a features specific to their sex, but not until after they've already developed nipples. later in life, chemicals called hormones trigger changes in females so that they can nurse their young. Males don't have those hormones, so they're stuck with nipples that are nothing more than chest accessories, other than a few expectations (mice, platypuses, stallions),most other male mammals have nipples. Nipples don't cause males harm, which is probably why evolution hasn't given them the ol'heave-ho.
WHY DO PEOPLE GET GOOSE BUMPS?
Like your wisdom teeth and your tailbone, goose bumps serve no purpose in modern humans. They're created by itty-bitty muscles in our hair follicles, which raise the bumps as a reflex reaction to a sudden drop in temperature or feelings of panic, anger, or extreme fear goosebumps fulled up the body hair of our much furrier ancestors, to help the trap heat or make them look larger to threatening animals. Today, goose bumps just make you look like you need to borrow a sweater.
Goose bumps not dangerous anyway but it's shows an signal of the fear,anger,panic,and more by which we can identify that what is a current situation, we think that heat can work for goose bumps but, actually it's depends on the situation if we on high temperature or low temperature or in other condition it shows a goosebumps as a symptom of fluffed up the body hair.
WHY DO I HAVE A BELLY BUTTON?
For the same reason dolphins, cats digs, chimps, bats, & other "placental mammals "-animals nourished inside their mothers before birth-have navels. In other words you can thank your mother for that lint collector on your stomach. Before you were born, when you were still developing in the womb.you were hooked up to your life-support system through a special cord that plugged into your navel. Through this "umbilical cord ",you received food and oxygen and passes waste. The day you were born, you let out a cry and began breathing on your own. That let the doctor know he or she could cut off the umbilical cord, leaving you with a belly button as a souvenir. Wheather it's an "innie" or an "outie",we all have one!.
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