The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..