A small lithospheric block with characteristics quite different from those of surrounding rocks;
these features commonly were accreted to continents during orogenies:a.
terranes d. continental rifts
b. therapsids e. organic reefs
c. subduction zones
A
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The law of reflection holds for
A. light. B. sound. C. both of these D. none of these
Which of the following is a biotic as opposed to an abiotic factor in an ecological system?
A. Local climate B. Physical and chemical properties of an environment C. Sunlight D. Decomposers
Volcanoes in the Cascade Range and Yellowstone have remained active during the Pleistocene glaciations
a. True b. False
The earliest known domesticated wheat, barley, and rice crops are thought to have originated in Asia
A) 10,000 years ago. B) 100,000 years ago. C) 1.1 million years ago. D) 1,000 years ago. E) 10 million years ago.