Which of the following statements about U.S. landfills is true?
A. It is against the law to build anything on an abandoned landfill.
B. Landfills should be kept as dry as possible to maintain high biodegradation levels.
C. More than three-fourths of the landfills in the United States have been closed since 1988.
D. There are more active landfills in existence today than ever before.
Answer: C. More than three-fourths of the landfills in the United States have been closed since 1988.
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With immediate and sustained action to stop production of all ozone-depleting chemicals:
a. The ozone-hole problem will be solved immediately. b. It will take about 5 years for the earth's ozone layer to recover to 1980 levels. c. It will take about 30 years for the earth's ozone layer to recover to pre-1950 levels. d. It will take about 60 years for the earth's ozone layer to recover to pre-1950 levels. e. It will take about 60 years for the earth's ozone layer to recover to 1980 levels.
The First Priority in an integrated solid waste management program can be most effectively applied in which area of the diagram?
What will be an ideal response
Till is
A) sorted but not stratified. B) stratified but not sorted. C) sorted and stratified. D) neither sorted nor stratified.
The climate over much of Pangaea was ____
a. warm and moist due to sea breezes b. cool and moist due to sea breezes c. arid due to a rain shadow effect caused by the position of mountain ranges d. moist on the interior, but dry and arid along the shorelines e. unable to be determined because the rocks were destroyed during subduction