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Because of their ability to undergo ______ , viruses can rapidly evolve
answered
Dec 28, 2016
Biology
middle-school
2
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The process by which repeated freezing and thawing cycles cause rocks to break up is known as A. erosion. B. physical deposition. C. chemical weathering. D. mechanical weathering.
answered
Mar 14, 2016
Social Studies
high-school
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