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I was running, fell down and now have a black and blue knee. Why did my knee become so colorful?

My dog, Wiener, sheds all over the place! My bratty sister told me I shed just as much as Wiener. Can that be?

My friend was rushed to the hospital to have his appendix taken out. What is an appendix, what's it look like, what's it do, and why do we have one?

My friend said that there's a muscle in the body that never ever rests. Is that true?

I was wondering: can I breathe and eat at same time?

What would happen if we didn't have thumbs?

How come we have hair on our bodies?

I read in the paper about a man whose kidneys weren't working. His brother saved the man's life by giving him one of his own kidneys. What are kidneys? How did the man "give" his brother one of his kidneys? And isn't this man now going to die?

My mom says she has a gallstone! Is it really a stone? And what does your gall bladder do, anyway?

What makes my hair curly and my friend Barb's hair straight?

What does my stomach look like?

My friend Zack has really big ears. He says the bigger the ears, the better you can hear. Is that true?

Why are adults stinkier than kids?

What causes snoring? I want to know because even though my parents are sleeping down the hall, I can hear my Dad snoring. Boy, is he loud!

Why are lips pink on girls and boys -- even without lipstick?

Why do I get thirsty?

Where does my voice come from? Someone said it came from a voice box. What's that?

I read a book that said our eyes are just a camera. Is that true?

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