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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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Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

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

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Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

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Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains matu..