Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..