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Water cycle
- 2. The World’s Water *70% of the earth’s surface is water *almost 98% of the water on earth is saltwater *2% is freshwater *80% is frozen in glaciers
- 6. Acid Rain
Editor's Notes
- The UN estimates 18% of the human population do not have access to safe drinking water. Most of the freshwater
- The Chesapeake Bay Watershed covers 64,299 square miles and includes 6 states. The Juniata River is part of the Chesapeake Bay Watershed, first flowing into the Susquehanna and then into the Chesapeake—and finally into the Atlantic Ocean. The Chesapeake Bay, due to pollution, has resulted in massive fish kills, as well as clams and worms. As a result, there are only about 500 oystermen in the Chesapeake, whereas twenty years ago, there were several thousands. Just prior to Exit 111, Junction Pennsylvania 153 south of Penfield, westbound Interstate 80 approaches the highest point east of the Mississippi River. Interstate 80 reaches 2,250 feet above sea level at this point, which is located within Moshannon State Forest and sits along Pennsylvania's section of the Appalachian Mountains. At this point, Interstate 80 leaves the Chesapeake Bay watershed and enters the Allegheny River watershed. The highest point west of the Mississippi River is also the highest point on the transcontinental freeway: 8,640 feet above sea level at Sherman Hill in Wyoming, just east of Laramie—from http://www.interstate-guide.com/i-080.html
- The lower the pH, the more acid rain