Fat is the nutrient needed as an energy store and insulation.
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Particles from the top of the cloud get heavier and go to the bottom of the cloud also when positive and negative charges grow large enough
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Millions of years ago, the Appalachians were taller than the Himalayas! Millions of years of erosion, however, have taken their toll. ... The crust that is now the Appalachians began folding over 300 million years ago, when the North American and African continental plates collided.