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.
The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica.It is located in the Midway Geyser Basin.Grand Prismatic Spring was noted by geologists working in the Hayden Geological Survey of 1871, and named by them for its striking coloration. Its colors match the rainbow dispersion of white light by an optical prism: red, orange, yellow, green, and blue.t is located in the Midway Geyser Basin. Grand Prismatic Spring was noted by geologists working in the Hayden Geological Survey of 1871, and named by them for its striking coloration. Its colors match the rainbow dispersion of white light by an optical prism: red, orange, yellow, green, and blue.