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...
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..
Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
