The 289 area code was created as an area code overlay for the Mississauga (Streetsville) area. Unlike the previous solutions, this process did not require the place to be geographically separated by different area codes.
Ionizing radiation is a term used for radiation whose quanta have energy to directly or indirectly ionize (one or more electrons are released from the atom of the given substance) molecules or atoms while passing through matter, hence the name ionizing radiation.
The major effect of a species' adaptive radiation is a dramatic increase in the diversity of the population gene pool. This increased diversity can lead, in time, to a dramatic increase in the number of distinct species in an environment, explains Understanding Evolution. Keep Learning.