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How Do Snails Get Their Shells?
Snails usually begin to grow their protective shells before they hatch. The common garden snail hatches from a tiny round egg. Hidden under
How Are Hailstones Formed?
How Are Hailstones Formed? Hailstones are balls of ice that fall from storm clouds. Hail is a type of precipitation, or water in the…
Why Do We See Stars When We Bump Our Heads?
Why Do We See Stars When We Bump Our Heads? The “Stars” we see if we receive a hard blow on the head are…
How Fast Does the Earth Spin?
How Fast Does the Earth Spin? The Earth is like a big ball, and it spins so as to turn around once every 24…
How Do Cavities Form in Teeth?
How Do Cavities Form in Teeth? Our teeth are covered with a sticky, slimy substance plaque that enables decay producing germs to cling to…