How does a graded bed form?
A. a gradual change in the climate of the region
B. an abrupt change in the composition of the sediment
C. a gradual decrease in the strength of the current over time
D. piling of sediment down the front of a dune or ripple
E. a gradual change in global climate
Answer: C
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What happened to the more than 4 million Native American populations after the arrival of Europeans?
A) They began trading with the Europeans and benefited economically. B) They migrated to better land in the interior of North America. C) The European educational system transformed their way of life, enabling them to benefit from early globalization. D) European diseases and disruptions reduced their numbers by more than 90%. E) They continued as before, having little contact with European immigrants.
What are some of the causes of eustatic change to sea level? Include local possibilities of sea level
change as well. What will be an ideal response?
The idea of ________ suggests that the physical, chemical, and biological laws that operate today have also operated in the geologic past
A) evolution B) absolutism C) uniformitarianism D) catastrophism
The major discoveries of the Challenger expedition
What will be an ideal response?