Oil, coal, and natural gas are collectively known as fossil fuels. Today, eighty-five percent of all energy
produced in the United States comes from burning these fuels. That energy powers almost two-thirds of
our electricity and virtually al
AP Environmental Calculations
Show all your work on a separate sheet of paper; partial credit is given for partial solutions to problems.
If the answer is not correct, you are not likely to receive credit for correct thinking if there
APES CH 13 Notes: Water Resources Mrs. Sealy
13-1 Waters Importance and Unique Properties
A. Water is important for several reasons.
1. It keep us alive; most organisms are more than 70% water.
2. It sculpts the earths surface and moderates the climate.
SOLID AND HAZARDOUS WASTE
See bulleted list of questions on p. 533 of text.
1. State the percentage of the worlds solid wastes that is produced by the United States. State the
percentage of solid waste produced in the