Dunes are typically classified based on shape
Indicate whether the statement is true or false
TRUE
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Coal contains only minute quantities of radioactive materials, yet there is more environmental radiation surrounding a coal-fired power plant than a fission power plant. This indicates that
A) the coal-fired power plant's radiation shields need to be strengthened. B) the coal-fired power plant has been contaminated. C) the coal-fired power plant contains none of the radiation it releases. D) the news media is biased in its coverage.
Temperatures in Earth's atmospheric layers vary in a zig-zag pattern with altitude principally because
A) the chemical composition of the atmosphere varies. B) air is compressible. C) the density of air varies with altitude. D) pressure varies with altitude.
What type of weathering most commonly affects limestone?
After taking urban warming into account, average surface air temperatures have increased by about ________ in the past 130 years
a. 0.01oC b. 0.1 oC c. 0.6 oC d. 6 oC