Abbreviation for the reduced form of nicotinamide adenine dinucleotide
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..