Which of the following rocks will be most resistant to weathering?
A) Solid bedrock
B) Jointed bedrock
C) Bedrock with solution weathering
D) Bedrock with sheeting
Answer: A
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The fragility of the desert ecosystem is indicated by
a. the high growth rate of plants b. moderate species diversity c. abundant groundwater d. long recovery time from disturbance e. all of these except the high growth rate of plants
The focused effort to increase food production through the development of new grain technology and other advances is called the ________
What will be an ideal response?
Physiologic density is always higher than simply people per square mile of all land because:
A) physiologic implies increased wealth B) all countries have voted to make it higher C) physiologic means "industrialized" D) no country is 100% arable land
In the soil profile below, iron is present in both the top and bottom later, as labeled, but why is only the second layer a reddish color?
A. The iron oxide was leached from the top layer in what was most likely an arid environment. B. When exposed to air, the iron oxide loses its reddish tint in what was most likely a wet environment. C. The iron oxide was leached from the top layer in what was most likely a wet environment. D. When exposed to air, the iron oxide loses its reddish tint in what was most likely an arid environment.