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4E SS Ch. 9 Test

Enter the letter for the matching Answer
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1.
Farmers plowing up prairie grass by planting wheat was one cause of what event in the 1930's?
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2.
By definition, the amount of rain that falls each year in a desert is less than what?
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3.
Today this city is our nation's top oil-refininf center.
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4.
A deep, narrow valley with steep sides
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5.
The form of petroleum that bubbles up from the ground.
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6.
An aquifer is a source of what?
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7.
Changing in order to survive in a certain environment.
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8.
Patillo Higgins discovered oil in this state in 1901.
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9.
A chemical made from petroleum
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10.
The process of water, wind, and ice slowly carrying away rock and soil
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11.
A hill with a flat top
A.
mesa
B.
erosion
C.
adaptation
D.
water
E.
the Dust Bowl
F.
Texas
G.
crude oil
H.
10 inches
I.
Houston
J.
canyon
K.
petrochemical
Type the Answer that corresponds to the displayed Question.
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12.
Like the Southwestern U.S., Nigeria has grown rapidly as a result of what?
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13.
Giant cactus trees called saguaros grow in this area in Arizona.
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14.
Deep, narrow valley that stretches 217 miles through northern Arizona
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15.
An underground layer of rock or gravel that traps water
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16.
An area of the Great Plains devastated by droughts and dust storms in the 1930's
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17.
A fuel formed underground from dead plants
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18.
A way to grow crops with only rain water.
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19.
In 1905 a drilling crew found oil near this city in Oklahoma.
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20.
A hill with a flat top that is smaller than a mesa
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21.
A factory where crude oil is separated into parts that can be used

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