A surface of discontinuity representing a break in the depositional record; a discontinuity representing
erosion or nondeposition is a(n) ____________________. Fill in the blank(s) with the appropriate word(s).
unconformity
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In what type of bioregion is desertification most likely to occur?
A) tropical forests B) temperate forests C) coniferous forests D) tundra E) grasslands
Which of the following acts set new standards to reduce automobile emissions along with establishing a cap-and-trade program for reducing sulfur dioxide emissions?
A) the Clean Air Act Amendment of 1990 B) the Air Quality Act of 1967 C) the Clean Air Act Amendment of 1970 D) the Clean Air Act of 1963 E) the Motor Vehicle Air Pollution Control Act of 1965
Worldwide, just a handful of farm types exist
Indicate whether the statement is true or false
________ is defined as travel to a place outside one's usual residential environment and involving a stay of at least one night
Fill in the blank(s) with correct word