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...
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..
Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..
