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

Freshwater Ecology
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Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

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Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

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Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

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

Regulation of Biological Systems
Regulation of Biological Systems

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