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Why Grass is Green ?

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Like many plants, most species of grass produce a bright pigment called chlorophyll. Chlorophyll absorbs blue light (high energy, short wavelengths) and red light (low energy,…

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What are Plastics?

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A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are typically organic polymers of high molecular mass, but…

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Why February has 28 Days ?

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February has 28 days to account for the extra six hours that the earth takes to revolve around the sun. Another theory holds that initially the original 10 month calender was…

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What do Lungs Look Like ?

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A healthy lung is pink, smooth and shiny, people who smoke damage their lungs; a damaged lung is black, bumpy and dull. When you inhale, your lungs inflate and your can see yo…

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