How long ago did the Atlantic start to form as Pangaea started to rift apart?
A) 1 million years
B) 20 million years
C) 200 million years
D) 2.0 billion years
E) 4.6 billion years
Answer: C
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What are the two groups of chemical sedimentary rock? Give an example of a rock that belongs to each group
What will be an ideal response?
Several historians speculate that the bubonic plague caused Europe to change from
A) an unsanitary society to a sanitary society, especially in central Europe. B) a credit-rich economy to a cash-poor economy. C) being a rural region to an urbanized region. D) being an urbanized region to a rural region. E) a land-poor, people-rich to a people-poor, land-rich group of societies.
The predominant type of precipitation during the winter in the humid continental, hot summer climates is ____________________
Fill in the blank(s) with correct word