What type of environmental tool was adopted by the U.S. government in 1990, in order to reduce emissions of coal burning electricity-generating plants?
A. shrinkable marketable permits
B. free marketable permits
C. command-and-control permits
D. both a and b above
D. both a and b above
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What could indicate that quartz sandstone and arkose may form from the weathering of granite?
A) the composition of clastic sedimentary rocks B) the texture of clastic sedimentary rocks C) the size of grains in sedimentary rocks D) the igneous composition
Which type of earthquake wave most closely resembles sound waves?
a. P-waves b. S-waves c. Love waves d. Rayleigh waves e. permanent waves
A(n) ____ solution has more hydrogen ions (H+) than hydroxide ions (OH?).
A. neutral B. acidic C. isotope D. basic E. logarithmic
Thunderstorms are most common during ____
a. during the early morning in the spring b. on a cold, clear winter day c. during the winter on cold nights d. spring and summer afternoons e. cloudy fall afternoons