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Adaptive Radiation

The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..

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In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

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This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

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Leaves

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

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Movement of Molecules Across Cell Membranes

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..