The Upper Devonian–Lower Mississippian _________________ _________________ of North America are typically
noncalcareous, thinly bedded, less than 10 m thick, and rarely contain fossils. Fill in the blank(s) with the appropriate word(s).
black shales
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Which of the following decades had the highest average global temperature?
A) 1900-1910 B) 1940-1950 C) 1960-1970 D) 1980-1990 E) 1990-2000
Cis-trans isomers exist for which of the following molecules, all of which have the molecular formula C3H5Br?
A) 1-bromopropene B) 2-bromopropene C) 3-bromopropene D) none of these
Since 1970 the rate of new discovery of oil that we can tap using available technologies has declined by ________
A) 85% B) 75% C) 55% D) 35% E) 65%
In which part of Israel has some land been returned to Palestinian control, but new Israeli settlements have also been allowed?
A) the Dead Sea B) Bethlehem C) the West Bank D) Gaza Strip E) Sinai Peninsula