Ozone hole may be largest ever.Ozone-depleting chemicals in the upper atmosphere are projected to decline sharply in coming years, but in the mean time the damage done by these chemicals may be peaking. Australian Australian pertaining to or originating in Australia. Australian bat lyssavirus disease see Australian bat lyssavirus disease. Australian cattle dog a medium-sized, compact working dog used for control of cattle. scientists reported in August that by the end of 2003, the hole--which fluctuates with the seasons--appeared likely to exceed the record size it reached in 2000. About 66,000 people die from skin cancer each year--many of those deaths attributable attributable emanating from or pertaining to attribute. attributable proportion see attributable risk (below). attributable risk to ultraviolet An invisible band of radiation at the upper end of the visible light spectrum. With wavelengths from 10 to 400 nm, ultraviolet starts at the end of visible light and ends at the beginning of X-rays. The primary source of ultraviolet light is the sun. radiation allowed by the ozone hole ozone hole n. An area of the ozone layer, such as the large area over Antarctica or the smaller area over the North Pole, that periodically becomes depleted of ozone. . |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion