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Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

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

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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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For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..

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Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

IQ, Creativity and Learning
IQ, Creativity and Learning

Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..