Get the answer of: What Caused Mass Extinctions ? It becomes clear that there is an intense amount of interconnectivity between the aspects of the biosphere. At the cellular level, there is a symbiotic effect and it continues up throughout the chain of organisms all the way to the biosphere levels. This interconnectivity can have positive effects, but it can [...]
This article throws light upon the four main categories of Speciation. The categories are: 1. Allopatric Speciation 2. Parapatric Speciation 3. Sympatric Speciation 4. Alloparapatric Speciation. Category # 1. Allopatric Speciation: Allopatric speciation occurs when the new species evolves in geographic isolation from the parent species. The species range, becomes subdivided by a barrier such as a new mountain range [...]
The process of evolution of different species starting from a point in an geographical area and finally radiating to other areas of geography is called adaptive radiation. Examples of adaptive radiation are: 1. Darwin's Finches: Darwin observed an amazing diversity of creature in Galapagos Islands. They represented one of the best examples of adaptive radiation. Of all the varieties of [...]