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Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

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Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

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The Homo Species

The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..

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Chromosomes X and Y and Sex Determination

This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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The Origins of Life

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..