Air pollution consists of gaseous, liquid, or solid substances that, when present in sufficient concentration, for a sufficient time, and under certain conditions, tend to interfere with human comfort, health or welfare, and cause environmental damage.
Triple Falls in Glacier National Park, Montana. October 31, 2012 by wahba 3 Comments. Located at the Montana and bordering with the Canada provinces British Columbia and Alberta, the Glacier national park is spread over the 1,000,000 acres and it is real natural beauty.In this picture you can enjoy the triple falls with the outstanding background landscapes. The photography has been taken by Chlo Ethan.ctober 31, 2012 by wahba 3 Comments. Located at the Montana and bordering with the Canada provinces British Columbia and Alberta, the Glacier national park is spread over the 1,000,000 acres and it is real natural beauty. In this picture you can enjoy the triple falls with the outstanding background landscapes.
Yellowstone National Park, Wyoming. Avalanche Peak. Located on the eastern boundary of Yellowstone in the Absaroka Range of northwestern Wyoming, 10,568-foot Avalanche Peak can be climbed on a trail that begins near Eleanor Lake, between the east entrance to the park and Yellowstone Lake.ocated on the eastern boundary of Yellowstone in the Absaroka Range of northwestern Wyoming, 10,568-foot Avalanche Peak can be climbed on a trail that begins near Eleanor Lake, between the east entrance to the park and Yellowstone Lake.