Biology focuses on a single living organism at a time, examining the life stages, reproduction, morphology and range. In the case of fauna, there is considerable attention to the motor and social behavior of each species. For both animals and plants, biologists examine carefully the relationship of organisms to nutrient sources. Subject species may be microscopic as small as bacteria, or include the largest creatures ever known, such as present day cetaceans or extinct dinosaurs. Some biology studies focus on the reconstruction of events deep back into prehistory, while other research is preoccupied with events that are happening today and forward into the future.
Benthos is one of three major ecological groups into which marine organisms are divided, the other two being the nekton and the plankton. The benthos are organisms and...
PlioceneLast Updated on 2013-06-18 at 14:31
Editor's note: The Pliocene is the period of the geologic timescale that spans the era from approximately 5.331 to 2.588 million years ago. It preceeds the Pleistocene... More »
Great Basin shrub steppeLast Updated on 2013-06-18 at 04:23
The Great Basin shrub steppe ecoregion is situated in the most northerly of the four American deserts. Unlike the other three, which have almost exclusive ties to... More »
Tamarix controlLast Updated on 2013-06-17 at 17:10
Tamarix control is a significant invasive species issue in the western USA, especially in the American southwest. The woody plant genus Tamarix, also , also known by the... More »
Chihuahuan DesertLast Updated on 2013-06-16 at 21:48
The Chihuahuan Desert encompasses one of the most biologically diverse arid regions on Earth. This ecoregion extends from within the United States south into Mexico. This... More »
Colorado Plateau shrublandsLast Updated on 2013-06-16 at 21:44
The Grand Canyon epitomizes the Colorado Plateau, an area that has been called the "land of color and canyons." The Plateau can be thought of as an... More »
Mojave DesertLast Updated on 2013-06-16 at 21:42
The Mojave Desert is the smallest of the four American deserts. While the Mojave lies between the Great Basin Shrub Steppe and the Sonoran desert, its fauna is more closely... More »