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This tutorial describes the role of gibberellin family in plants. Find out the effects of gibberellin on plant growth an..

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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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Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

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This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..