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This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..

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This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..

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The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

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Darwin and Natural Selection

This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..

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Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

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Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..