Thirst behavior

Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..

Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..

Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..

This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..

Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..

Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

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