WHY DO WE HAVE EYEBROWS ? DO YOU KNOW ??

1.Can i survive without my all organs

• It's a no- brainer that you need your brain and you heart you wouldn't last long if your liver failed.
• But the lungs and kidneys come in pairs, so you could survive if one of them failed. People who've lost thier spleen in accident have gone on to live healthy lives. The tonsils anD APPENDIX ,meanwhile are practically useless and are routinely removed when they get inflamed.

2. WHY DO i have eyebrows ?

• Humans have evolved to become less hairy in the past six million year or so but we still have those clumps of fu above our eyes. beyond their role in our eyes . Beyond their role in our in facial expression,eyebrows act like natural sweatbands, preventing rain and sweat from running directly into our eyes.

3.WHY DO MEN have nipples ??

• They were there before you were 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 on features specific to their sex, but not until after they've already developed nipples. Later in life , chemical called hormones trigger changes in female so that they can nurse their young. Male don't have those hormones ,so they're stuck with nipples that are nothing more than chest accessories.Other than a few exception  most male mammals have nipples, which is probably why evolution hasn't given them the ol'heave-ho.

4.WHY DO I have belly buttons ??

For the same reason dolphins ,cats,dogs,chimps,bats,and other "placental animal"-animals nourished inside their mother before birth--have navels. IN other words ,you can think your mother for that lint collector on your stomach .Before you wre born, when you were still developing in the womb , you were hooked up to your life -- support system through a special cord taht plugged into your navel, Through this "umbilical cord ,"you received food and oxygen and passed 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 buttons as a souvenir. Whether it's an "innie" or an "outie" we all have one !!

5. HOW MUCH OF MY BODY'S ENERGY DOES MY BRAIN USE  ?? 

•  The electrical message bouncing across your brain at any  given time outnumber the message zipping through the world's telecommunication network . All that activity requires enough electicity to power a dim lightbulb . That might not sound like much until you consider the brain uses 20 percent of the body's energy but is only about 2 percent of its wieght.

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