Astomia

Astomia congenital absence of a mouth. Origin: g. A-priv. – stoma, mouth..

Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..

The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..

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

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