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If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

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Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

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

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Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

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Still Water Animals

Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..