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If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

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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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Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..

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Consciousness and Behavior

Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..

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Independent Assortment and Crossing Over

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

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While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..