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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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Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

Geological Periods
Geological Periods

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

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Birth of a Human Baby

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