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There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..

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The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

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This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..

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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

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Cell Biology

The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..