Why Do Water Pipes Sometimes Burst in Winter?
Why Do Water Pipes Sometimes Burst in Winter? Cold water pipes may burst in winter when the outside temperature falls below 0°C (32 °F) and the water turns to ice. The...
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What Is a Meteorite?
What Is a Meteorite? Meteorites begin as bodies of matter traveling at great speed through space. In the solar system there are numberless such bodies, usually chunks...
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When Do Bones Break?
When Do Bones Break? Bones break under varying degrees of pressure according to age, health and other circumstances. They are made of hard, strong connective tissue and...
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Why Do We Have Kidneys?
Why Do We Have Kidneys? Our kidneys perform four functions, of which the most obvious is the ejection of waste materials containing nitrogen from the body. They also...
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What Is an Internal Combustion Engine?
What Is an Internal Combustion Engine? An internal combustion engine is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a...
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