How Are Plastics Made?
Plastics are manufactured from chemicals that come from such materials as coal and petroleum. Petroleum, for example, is the source for diff
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Temperature
What Is Soil?
Soil is a mixture of very small pieces of rock and rotted materials from plants and animals. This rotting plant and animal material, called
Where Does Snow Come From?
Snow is a form of precipitation like rain and sleet. Snow forms in clouds when the air temperature up there gets below freezing. Water molec
How Long Can a Camel Go Without Drinking Water?
How Long Can a Camel Go Without Drinking Water? The amount of time that camels can go without water depends on several factors, such as the
Why Do Zebras Have Stripes?
Why Do Zebras Have Stripes? Zebras’ stripes are a form of camouflage that helps them to hide from their enemies. When you see a zebra in a