Do Animals Cry?
Do Animals Cry? Most animals don’t cry the way people do. Many animals produce a liquid that looks like tears. These “tears” have nothing to do with...
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Who Made the First Money?
Who Made the First Money? As far as anyone knows, the first money was made in China. Emperor Ch’ing Wang, ruler of China from 1125 to 1079 B.C., is credited with having...
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Can a Skunk Aim Its Spray?
Can a Skunk Aim Its Spray? Yes — a skunk can accurately aim and spray its stinging liquid at an enemy as far as 15 feet away. The smelly liquid, known as mercaptan, is...
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Do Millipedes Really Have Thousand Legs?
No, millipedes don’t have a thousand legs, even though they are called thousand – leggers. In fact, most millipedes usually have only between 60 and 120...
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Is There Any Difference Between Fog and Clouds?
Is There Any Difference Between Fog and Clouds? No – fog is actually a cloud which lies close to the ground. Clouds form wherever the air cools below the dew...
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What Is Glue Made From?
True glue – that is – traditional glue is made from the skin and bones of animals. The glue is extracted by boiling these materials in water. The strong...
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Which Bird Lays the Biggest Egg?
Which Bird Lays the Biggest Egg? The ostrich, the world’s largest bird, lays the biggest egg. This egg is about the size of a large grapefruit, and its shell...
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How Is Safety Glass Made?
The safety glass used in automobile windshields is made by lamination. This is a process in which thin sheets of clear plastic are placed between two sheets of glass....
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When Does a Hill Become a Mountain?
When Does a Hill Become a Mountain? There is no exact rule that indicates when a hill becomes a mountain. But scientists who study the surfaces of the Earth usually...
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Where Are an Owl’s Ears?
Where Are an Owl’s Ears? The tufts on the top of some owls’ heads may look like ears, but the real ears lie beneath feathers at the sides of the head. Like other...
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