When upper-air flow produces large-amplitude troughs and a general ________ flow, cold air moves southward and cyclonic activity dominates the weather. (Assume Northern Hemisphere.)
A) North to East B) North to South C) West to East D) West to South
B
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Some people contend that any ____ worldview will eventually fail because it wrongly assumes we now have or can gain enough knowledge to become effective managers or stewards of the earth.
A. planetary-centered B. human-centered C. economic-centered D. life-centered E. earth-centered
Based on energy flow, what types of organisms are most abundant in the ocean?
1.dolphins, sharks, and other large predatory fishes
2.deep-sea bioluminescent fishes
3.small drifting organisms like those in the upper circular area
4.smaller drifting organisms seen in the lower circular area
The longest subdivision of the geologic time scale is the ________
A) epoch B) eon C) era D) period
Which of the following is an example of an age-relationship based on relative dating?
A) Australopithecines were alive 3.2 million years ago. B) The Neanderthals became extinct 35,000 years ago. C) Australopithecines evolved before Homo erectus. D) Clovis points have been dated at 11,000 years old in North America.