Diverticulum (Science: anatomy, surgery) a small sac-like structure that sometimes forms in the walls of the intestines, diverticula can trap particles of food (especially small seeds and undigested grains) and become very inflammed and painful (this condition is called diverticulitis)...
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
