1 â¢ Ozone (O3) is an extremely reactive gas molecule composed of three oxygen atoms. â¢ 2  Ozone forms in chemical reactions in the atmosphere when nitrogen oxides (NOx) and volatile organic compounds (VOCs), also called hydrocarbons (HC), come into contact with both sunlight and heat. â¢ Ozone (O3) is an extremely reactive gas molecule composed of three oxygen atoms. â¢ 2  Ozone forms in chemical reactions in the atmosphere when nitrogen oxides (NOx) and volatile organic compounds (VOCs), also called hydrocarbons (HC), come into contact with both sunlight and heat.
Grolar bears. The offspring of a grizzly bear and a polar bear, a grolar bear is one beast you don't want to meet in the woods. Interestingly, unlike many hybrid animals on this list, grolar bears are known to occur naturally in the wild.
The grizzly is just one subspecies, or type, of brown bear (Ursus arctos). While grizzlies are confined to northwestern North America, other types of brown bears are found in Europe, northern Asia and Japan.The species as a whole is found in fairly healthy numbers worldwide (200,000 or more).he grizzly is just one subspecies, or type, of brown bear (Ursus arctos). While grizzlies are confined to northwestern North America, other types of brown bears are found in Europe, northern Asia and Japan.