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This tutorial looks at the mutation at the gene level and the harm it may bring. Learn about single nucleotide polymorph..

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Running Water Freshwater Communities

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

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Human Reproduction and Fertilization

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

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Freshwater Communities & Lentic Waters

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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A Balanced Vitamin Diet – Vitamins A – K

A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

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Soils

Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

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