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Your answer is... Rivers flowing over a long period of time cut out the bottom of the canyon and wind erodes the sides of the canyon.
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Answer:
police more power, person they arrest loses power
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A Mummy's DNA May Help Solve The Mystery Of The Origins Of Smallpox
The surprise find of smallpox DNA in a child mummy from the 17th century could help scientists start to trace the mysterious history of this notorious virus.
Smallpox currently only exists in secure freezers, after a global vaccination campaign eradicated the virus in the late 1970s. But much about this killer remains unknown, including its origins.
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to represents population distribution or to represent no of population