"New renewables" are ________
A) solar, wind, geothermal
B) hydro, biomass
C) wind, wood, alcohol
D) fusion, fission
E) coal, natural gas
A
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Which of the following is the greatest current threat to forests in the United States?
A) Earthquakes B) Erosion C) Fires D) Logging
Which of the following is densest: a kilogram of feathers, a kilogram of bricks, or a kilogram of water?
A) A kilogram of feathers B) A kilogram of water C) A kilogram of bricks D) All three have the same density because they all have the same mass.
The most common reason that dew forms is ________
A) plants give up water to the atmosphere when the temperature decreases B) fast heating of the atmosphere when the sun first comes up in the morning C) a rapid increase in water vapor in the air during the night D) radiant cooling of the ground and adjacent air in the evening
Commonly, materials flowing out of hot springs build a ________
A) dome B) sinkhole C) geyser D) cavern E) doline