By the principle of ________, the surface feature known as the Grand Canyon is ________ than the sedimentary formations that are exposed in the side walls of the Grand Canyon.
A. inclusion; older
B. superposition; younger
C. cross-cutting relationships; older
D. superposition; older
E. cross-cutting relationships; younger
Answer: E
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The angle at which the Sun's rays strike the Earth has a great effect on
A. the intensity of solar energy received at Earth's surface. B. Earth's seasons. C. the way climate varies with latitude. D. all of the above
Sediments derived from land are called ________. Most that make it into the sea are deposited in the ________
a. hydrogenous; continental margin b. terrigenous; continental margin c. terrigenous; deep seafloor d. hydrogenous; deep seafloor
Which of the following sources contributes the least to the emission of greenhouse gases?
A) agriculture B) transportation C) waste disposal D) power station operation E) fossil fuel mining
Rowland and Molina's work showed that ultraviolet light in the stratosphere causes CFCs to release ________ atoms
A) chlorine B) hydrogen C) fluoride D) carbon E) mercury