Disease, death, or other health-related outcomes are then ascertained and compared. common source outbreak: An outbreak that results from a group of persons being exposed to a common noxious influence, such as an infectious agent or toxin.
Pokedex Entry #041: Zubat is a Poison/Flying Type Pokemon. It evolves into Golbat. Zubat remains quietly unmoving in a dark spot during the bright daylight hours. It does so because prolonged exposure to the sun causes its body to become slightly burned.
Darwin's finches are a clear and famous example of divergent evolution, in which an ancestral species radiates into a number of descendant species with both similar and different traits. Divergent evolution is the accumulation of differences between groups, leading to the formation of new species. The term can also be applied in molecular biology characteristics, such as to proteins that derive from two or more homologous genes.