Definition of Osceola in English: (C.1804â38), leader of the Seminole Indians; born Billy Powell. Resisting all government efforts to remove his people from their homeland in Florida, he led them in the Seminole Wars, which began in 1835. He was captured in 1837 while bearing a flag of truce.
Bad Ozone-In the Earth s lower atmosphere, near ground level, ozone is formed when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources react chemically in the presence of sunlight.Ozone at ground level is a harmful pollutant. Ozone occurs naturally in the Earth s upper atmosphere (the stratosphere), where it shields the Earth from the sun s ultraviolet rays. 2  At ground-level, ozone is an air pollutant that can harm human health.
Ozone is formed from dioxygen by the action of ultraviolet light and also atmospheric electrical discharges, and is present in low concentrations throughout the Earth's atmosphere (stratosphere). In total, ozone makes up only 6993600000000000000â 0.6 ppm of the atmosphere.zone's odour is sharp, reminiscent of chlorine, and detectable by many people at concentrations of as little as 6992100000000000000â 10 ppb in air. Ozone's O 3 formula was determined in 1865.