Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..