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.
In North America there is currently no brown (grizzly) bears east of Alberta Canada or Montana U.S.A. They exist currently in the north and west of Canada and U.S.A plus Alaska. Black Bears may be brown or black and sometimes white. Know the difference between a black bear or a brown bear (grizzly) ! ! The black bear and the interior brown bear often referred to as the grizzly bear may not exhibit a visible size difference. Grizzly bears tend to be larger. The brown bears of the coastal areas of Alaska and Russia are much larger than the grizzly of the interior or the black bear.