AnswersSC332 Environmental Science BSoil Around the World

Soil Around the World Answers

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1
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What characteristic is shared by both inceptisols and entisols, the soils of flood plains?

A
They both have well-developed soil horizons and profiles.
B
Both are young and only beginning to develop horizons and a soil profile.
C
They are both at the final stage of soil development.
D
None of the above
2
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Histosols experience a fast rate of decomposition. Please select the best answer from the choices provided

A
T
B
F
3

How is over-irrigation damaging to soil?

A
It reduces the amount of organic material in soil.
B
It results in the accumulation of salt near the soil surface.
C
It increases the acidity of soil.
D
It removes water from the water table.
4

Why might soils rich in organic matter not be fertile?

A
Soil fertility comes from a balance of organic matter and other mineral nutrients.
B
Large amounts of organic material make soil retain too little water.
C
Soil fertility is a result of the inorganic minerals present.
D
Soils rich in organic material are always highly fertile.
5

What kind of vegetation do fertile, well-developed alfisols support?

A
desert scrub
B
peat bogs and marshland
C
temperate forests
D
tropical rainforest
6

Utilizing ultisols for agriculture requires _______.

A
extensive irrigation
B
fertilizer to balance the high alkalinity of the soil
C
adding organic matter to supplement the shallow horizons
D
fertilizer to replace nutrients that leach from the soil
7

Why is volcanic soil (andisol) very fertile?

A
It is rich in minerals from volcanic deposits.
B
It is a young soil with low water retention.
C
It has been leached of mineral nutrients.
D
Volcanic activity warms the soil.
8

Lower temperatures lead to slower soil formation.

A
T
B
F
9

Which of the following is not a defining characteristic of soil?

A
mineral composition
B
humidity
C
texture
D
color
10

The organisms native to an area will impact the types of soil found in that area.

A
T
B
F
11

Where are the effects of soil salinization most likely to be seen?

A
inland farmland
B
mountain communities
C
coastal farmland
D
coastal cities
12

What characteristic is shared by both inceptisols and entisols, the soils of flood plains?

A
They both have well-developed soil horizons and profiles.
B
Both are young and only beginning to develop horizons and a soil profile.
C
They are both at the final stage of soil development.
D
None of the above
13

Which of the following is not a defining characteristic of soil?

A
mineral composition
B
humidity
C
texture
D
color
14

Soil compaction can result in increased flooding in an area.

A
T
B
F
15

Aridisols are soils characteristically found in _______.

A
forests
B
plains
C
deserts
D
swamps
16

Why might soils rich in organic matter not be fertile?

A
Soil fertility comes from a balance of organic matter and other mineral nutrients.
B
Large amounts of organic material make soil retain too little water.
C
Soil fertility is a result of the inorganic minerals present.
D
Soils rich in organic material are always highly fertile.
17

Lower temperatures lead to slower soil formation.

A
T
B
F
18

Soil compaction results from _______.

A
the reduction or elimination of pore space in soil
B
the weight of heavy machinery on soil
C
livestock walking over soil
D
all of the above
19

How is over-irrigation damaging to soil?

A
It reduces the amount of organic material in soil.
B
It results in the accumulation of salt near the soil surface.
C
It increases the acidity of soil.
D
It removes water from the water table.
20

Soil color only reflects the amount of organic matter present in soil.

A
T
B
F

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