CAUTION: Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian. DrontalÂ® Plus Taste TabsÂ® (praziquantel/pyrantel pamoate/febantel) Broad Spectrum Chewable Anthelmintic Tablets for Dogs are available in three tablet sizes. Each size is scored for convenient oral administration.
Ozone is also destroyed naturally in the stratosphere, being dissociated by ultraviolet radiation: This is the reaction that is responsible for O3's absorbtion of uv radiation that would otherwise reach earth.
Tropospheric and Stratospheric Ozone. Perhaps the most common misunderstanding about ozone comes from the fact that, in certain places, ozone is essential to life. When ozone is high above the Earth in the stratosphere, it helps protect life on the ground from solar radiation by scattering incoming ultraviolet rays from the sun. The skin cancer epidemic in Australia, for example, is related to a hole in the stratospheric ozone. But when ozone is closer to the ground (the troposphere), it enters our respiratory system and can cause a variety of mild to severe health effects.