Soil Around the World Answers

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1
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Explain whether or not you would expect the soil of flood plains (inceptisols and entisols) to be fertile.

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2
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Which of the following is not a characteristic of desert soils (aridisols)?

A
accumulation of minerals
B
little organic matter
C
sparse vegetation
D
none of the above
3

Prairie soils (mollisols) are _______.

A
poor in organic matter
B
easy to cultivate and fertile
C
poor in mineral nutrients
D
difficult to cultivate but fertile
4

How does over-irrigation lead to salinization?

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5

Permafrost soil (gelisol) is _______.

A
resistant to erosion
B
fragile
C
rich in microorganisms
D
a fast developing soil
6

Soils in different regions differ based on the _______.

A
local climate
B
topography of the land
C
native organisms
D
all of the above
7

Explain how the use of heavy machinery in an area can lead to an increase in the severity of flooding.

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8

Explain why volcanic soil (andisol) is fertile.

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9

Which of the following is true about soil color?

A
A dark color indicates that the soil is poor in organic matter.
B
Bright yellow and red colors indicate large amounts of organic matter.
C
Yellow or red hues in the soil indicate the presence of iron or aluminum.
D
Yellow or red hues in the soil indicate the presence of calcium or magnesium.
10

Explain why the presence of large amounts of organic matter alone does not result in fertile soil.

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