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.
In the troposphere, the ground-level or bad ozone is an air pollutant that damages human health, vegetation, and many common materials. It is a key ingredient of urban smog. In the stratosphere, we find the good ozone that protects life on earth from the harmful effects of the sun's ultraviolet rays.zone is found in two different layers of the atmosphere-the troposphere and the stratosphere. The stratospheric ozone, or good ozone, protects life on earth from harmful effects of the sun's UV rays.