Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..