a theory of organic evolution claiming that new species arise and are perpetuated by natural selection.The theory that was created by the english biologist Charles darwin, where the ‘survival of the fittest’ in species would guarantee long term survival. See the natural selection tutorial.
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..
Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..