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My Answered Questions

• Why does my hair stand on end when I take off my hat on a cold, dry day?

• Why do leaves change color in the fall?

• Why do cats always land on their feet?

• How do scientists know how to make a flu vaccine if viruses can be different every year?

• Why do boats float?

• do you know what pneumonoultramicroscopicvolcanoconosis means without usisng a dictionary ?

• What are stem cells?

• Why do stars twinkle?