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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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Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

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Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

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Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

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Pollution in Freshwater Ecosystems

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