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Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

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Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

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Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

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This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

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Neurology of Illusions

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Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..