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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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Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

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Still Freshwater & Plants

Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

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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 deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

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Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

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