What is the tornado intensity scale based upon?
A. Wind speed
B. Damage caused
C. Tornado size
Answer: B
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The Ediacaran fauna of Australia includes many examples of organisms with hard shells and internal body parts
a. True b. False
In the accompanying figure, the sequence of weathering changes over time will ________.
Fill in the blank(s) with the appropriate word(s)
The floor of a major ocean basin is called a(n) ________.
A. seamount province B. ridge depression C. ocean valley floor D. mid-ocean flat E. abyssal plain
What is the principal drawback to the use of tar sands as an energy source?
A. Large volumes of natural gas are required for processing. B. It is not located near the surface and thus amenable to strip mining. C. No large deposits are present in North America. D. Processing may produce carbon dioxide.