COMMON SPECIES thrives in a wider span of habitats and environmental circumstances. Although they have traits that are more adaptable in a variety of settings, they also have unique traits to displace other species in the competition for food, space, and other resources essential to their existence. They strongly influence the prevailing environmental conditions which make them capable to co-exist with other species. They are involved in several biotic interactions such as herbivory, omnivory, carnivory, predation, and competition. Findings by ecologists demonstrate that the effects of environmental degradation on common species result to surges or drops in the population of other species. Generally, common species relate to the greatest ecosystem structure and biomass. The species featured here may be common, but they are amazing!