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 ..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..
