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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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By nature, the genetic information from both parents is expected to be seen in the offspring following fertilization. Ho..

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Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

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Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..

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Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

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Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..