What hindered the acceptance of the continental drift theory?
A) There was no evidence of tropical plants ever existing in currently cold areas.
B) The explanation of centrifugal effect as the driving force behind the continents moving.
C) The discovery of similar fossils found on different continents.
D) The general shape of the continents.
B
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Atmospheric pressure changes ____
A) more rapidly in the horizontal direction than in the vertical B) more rapidly in the vertical direction than in the horizontal C) at the same rate in the horizontal and vertical directions D) more rapidly in the vertical direction over land than over the ocean
If natural gas prices remain affordable, increased production will ____.
A. make nuclear plants more affordable B. reduce the use of coal-burning plants C. accelerate the use of solar power D. accelerate the use of wind power E. result in the U.S. importing natural gas
Dams have significant advantages, and significant disadvantages as well. Compare and contrast these advantages and disadvantages and explain whether you think dams are an appropriate tool for dealing with fresh water.
What will be an ideal response?
Of the elements in the Earth's crusts, ________ makes up the most of the Earth's crust by weight
A) silicon (Si) B) aluminum (Al) C) oxygen (O) D) iron (Fe)