Periodontal treatment is the specialist cleaning of your teeth and gums to help control the bacteria that cause gum disease. Gum disease is caused by the germs (bacteria) which live in your mouth.
Ground-Level Ozone (O 3). Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface.It is called a secondary pollutant because it is produced when two primary pollutants react in sunlight and stagnant air.round-Level Ozone (O 3). Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface.
Tropospheric, or ground-level ozone is toxic to humans, plants, and corrosive to our machines and structures. In fact, stratospheric ozone is, too, but we don't have to breathe it, so it's considered good.. Tropospheric and stratospheric are only locations.zone, however is a poisonous gas. Human sources of ozone like machinery release it into the troposphere where it creates smog and health problems associated with breathing it, hence the gound level ozone level warnings. Source(s): jpm896 Â· 5 years ago.