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Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

Digestion and Absorption of Food
Digestion and Absorption of Food

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

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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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This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..

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

Consciousness and behavior
Consciousness and Behavior

Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..