EPA studies have found that 70% of all U. S. hazardous waste have no liners and could threaten groundwater supplies. a. storage ponds b. storage tanks c. sanitary landfills d. open pit landfills e. deep-well disposal sites

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

How far is a geographic second? a.) around 100 feet b.) around 1,000 feet c.) around 5,000 feet d.) none of the above

Which of the following countries was not an ally to the u.s.s.r. during the cold war? west germany poland romania cuba