Prairie grasslands have played a major role in creating the fertile soils of the central U.S
a. True
b. False
Indicate whether the statement is true or false
True
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The Exxon Valdez oil spill in Alaska was the largest oil spill to date in U.S. waters.
Answer the following statement true (T) or false (F)
Most of the people killed by the Mount St. Helens eruption of 1980 ________.
A. were in a town thought to be within a safe-zone B. were burned by lava flows C. had gone around barriers meant to keep people out of 'harms' way D. drowned when a large dam failed E. were scientists on top of the mountain
Primary producers transform energy from sunlight and certain inorganic chemicals into ________
A) high-energy carbohydrates B) biomass fuel C) galactose D) low-energy carbohydrates E) biomass energy
In the United States today, the approach that best reduces the volume and weight of municipal solid waste is ________
A) incineration B) sanitary landfills C) compaction D) recycling E) composting