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What Caused the Tower of Pisa to Lean?
What Caused the Tower of Pisa to Lean? The famous Leaning Tower of Pisa in Italy is the campanile (bell tower) of the cathedral…
What Is the Zodiac?
The Zodiac is a group of constellations that encircle the path traveled by the planets as we watch from the earth. The word "zodiac"…
What Causes Earthquakes?
What Causes Earthquakes? Earthquakes happen when two large pieces of the Earth's crust suddenly slip. This causes shock waves to shake the s
How Do Silkworms Make Their Silk?
How Do Silkworms Make Their Silk? Silkworms are the caterpillars of the silk moth. They use the silk they make for their cocoons. Silkworms
How Did the Crab Apple Get Its Name?
How Did the Crab Apple Get Its Name? Most apples are delicious to eat raw. But if you've ever bitten into a crab apple,…