By which century had agriculture spread widely throughout the Old World and much of the New World?
A) 1300 AD
B) 1400 AD
C) 1500 AD
D) 1600 AD
E) none of the above
C
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If the path of polar wandering recorded on two continents is not the same, then we can say that
A) Earth's magnetic history has been very complex. B) at least one of the continents has moved. C) our radioactive dating techniques have been inaccurate. D) the continents have always been widely separated.
Which of the following roles do streams play in shaping landforms?
A) erosion, transportation and deposition B) weathering, transportation and deposition C) erosion, weathering and deposition D) erosion, transportation and weathering
Draw a diagram showing how air temperature normally changes with height. Begin at the ground and end in the upper thermosphere. Be sure to label the four main layers. Give one important characteristic of each layer. Where on your diagram would the top of Mt. Everest, the ozone layer, and the ionosphere be found?
What will be an ideal response?
________ eruptions are the most violent types of explosive eruptions.
A. Hawaiian-type B. Vulcanian-type C. Icelandic-type D. Pompeiian-type E. Plinian-type