The conversion of nitrates into nitrogen gas which is then released into the atmosphere. This is caused by bacteria and how they obtain their energy. A small amount is converted to usable forms by lightning in a process called atmospheric nitrogen fixation.
Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..
