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This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

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Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

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Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..

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Amphibians & Early Reptiles

Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

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The Water Cycle

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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Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..