forest damaged by acid rainAcid precipitation is rain, snow, or mist which has a pH lower than unpolluted precipitation. Increased levels of acid prec...
Water lilies, a kind of adaptationsThe results of natural selection in which succeeding generations of organisms become better able to live in their e...
Active transport is the process by which cells expend energy to move atoms or molecules across membranes, requiring the presence of a protein carrier,...
In adaptive radiation, numerous species evolve from a common ancestor introduced into an environment with diverse ecological niches. The progeny evolv...
African AgricultureSoil and climatic conditions throughout Africa determine not only agricultural practices, such as which crops can be grown, but als...
African FloraWith few exceptions, Africa’s flora (vegetation) is tropical or subtropical. This is primarily because none of the African continent exte...