The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
