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.
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...
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..
