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This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..
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A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..