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.
Stratospheric Ozone, the Protector. This section provides an overview of the ozone layer, that is, the layer of life-protecting ozone found at the top of the stratosphere. A brief history of the discovery of the ozone 'hole' is included.The general concepts found in this section include the following:n the graphic below, the destructive cycle of a chlorine atom is shown. 1  UV radiation breaks off a chlorine atom from a CFC molecule. 2  The chlorine atom attacks an ozone molecule (), breaking it apart and destroying the ozone. 3  The result is an ordinary oxygen molecule () and a chlorine monoxide molecule (ClO).