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Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

Origins of Life on Earth
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Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

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Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..

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

Homeostatic Mechanisms and Cellular Communication
Homeostatic Mechanisms and Cellular Communication

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

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Principles of Hormonal Control Systems

Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..