Recently, geologists have been drilling through ice sheets for clues about
A. past climates
B. extinctions
C. ancient mammals
D. astronomical events
Answer: A
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Without gravity, a ball thrown at an upward angle would follow a straight-line path. Because of gravity, however, in 2 s it is below the straight line a distance of
A. 10 m. B. more than 20 m. C. 20 m. D. 15 m.
Felsic rocks are lighter in color than mafic rocks
a. True
b. FalseDung beetles feeding on the waste of cattle grazing on hay in a field represent
A) a detritus-feeding decomposer feeding on the wastes of a consumer eating a producer. B) a producer feeding on the wastes of a producer eating a consumer. C) a producer feeding on the wastes of a consumer eating a producer. D) a consumer feeding on the wastes of a decomposer eating a producer.
Which of the following could be the equilibrium constant for a reaction which proceeds very far in the direction of the products?
A) 1 x 10^-15 B) 1 x 10^- 2 C) 1 x 10^2 D) 1 x 10^15