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.
Ozone depletion and its causes. Ozone depletion is the term commonly used to describe the thinning of the ozone layer in the stratosphere. Ozone. depletion occurs when the natural balance between the production and destruction of ozone in the stratosphere is. tipped in favour of destruction. Human activity is the major factor in tipping that natural balance, mostly from. releasing artificial chemicals, known as ozoneâdepleting substances (ODS), to the atmosphere.