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Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

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Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

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Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

Regulation of Biological Systems
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Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..

Ecosystem Succession
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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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Plant Biology

Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..