Word origin: Greek koilōma (cavity)
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..