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Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

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

Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

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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