1) Butterflies in your stomach are caused by a reduction of blood flow to the stomach due to a fight-or-flight response.
2) When sharks need to pee, they shed their urine through their skin.
3) Cosmetic surgery for girls age 18 and younger has climbed by 300% from 1997 to 2007, with breast augmentation climbing 600%.
4) More successful marriages have been produced in "The Biggest Loser" than in "The Bachelor" and "The Bachelorette" combined.
5) Birds can see the Earth's magnetic field.
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