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Lujan Soils
Test Description: Test
Instructions: Answer all questions to get your test result.
1) Which statement describes the most likely effect for a country with a large population and a small amount of arable land?
A
It produces more food than can be used.
B
It pays less for food than countries with more arable land do
C
It struggles to produce enough food to support its population.
D
It exports most of its food to other countries.
2) Which of the following statements best describes a consequence of deforestation?
A
Deforestation causes soil to lose vegetation, allowing heavy rains to wash away the topsoil
B
Deforestation protects the habitats of many plant species, some of which are used to make important medicines.
C
Deforestation causes precipitation, which helps topsoil to maintain its nutrients for further plant growth.
D
Deforestation allows too much oxygen to be released into the atmosphere, making the atmosphere too clean
3) The nutrients in topsoil that support plant growth come from __________.
A
pesticides used by farmers
B
materials located below the Earth’s outer crust
C
minerals trapped inside of rocks
D
plant and animal matter that is decaying
4) The forests of central China are the giant panda’s natural habitat. Lately, the Chinese have deforested this area to make room for growing cities. How might this deforestation affect the giant panda’s survival?
A
It will make room for neighborhoods and shopping centers, making survival easier.
B
It will benefit plant species that the giant panda eats, making survival easier.
C
It will increase the giant panda’s habitat, making survival much easier.
D
It will shrink the giant panda’s habitat, making survival more difficult.
5) Which of the following statements is true?
A
Every country has the same resources available for growing food.
B
The world’s arable farmland is unevenly distributed.
C
Every climate is suitable for food production.
D
Any type of soil is suitable for growing crops.
6) Imagine that you are a farmer. You own many acres of land, but much of it is not arable because it lacks nutrients that crops need to survive. Which of the following strategies would you use to make your land arable?
A
Plant crops on the land and hope that some survive.
B
Use fertilizers to provide your crops with nutrients.
C
Develop a new irrigation system to provide more water for your crops.
D
Plant crops on the land and hope that some survive.
7) The loss of topsoil due to rain, ice, and wind is referred to as __________.
A
deforestation
B
weathering
C
weathering
D
clear-cutting
8) Burrowing animals, such as earthworms and moles, increase the rate of weathering, loosen and mix the soil, increasing the amount of air to enter and the ability of the soil to drain water.
A
False
B
True
9) the largest layer of weathered rock fragments with little or no organic matter from which soil is formed; lies directly above the parent rock/bedrock
A
topsoil - horizon A
B
subsoil - horizon B
C
parent rock/regolith - horizon C
D
litter - horizon O
10) process that carries materials such as iron minerals and clay from the A horizon to the B horizon as a result of water seeping down, or moving through
A
leaching
B
soil pH
C
soil fertility
D
soil texture
11) a vertical section of soil that shows soil horizons, or layers of soil
A
soil texture
B
soil horizon
C
soil chemistry
D
soil profile
12) The material from which soil forms is called
A
Boulders
B
humus
C
Parent material
13) How freely water moves through soil is called
A
Permeability
B
Soil texture
C
Ph
14) What is the dark, organic material that helps make soil fertile?
A
horizons
B
bedrock
C
humus
15) Soil is made by
A
The soil hurts the roots
B
The roots hold the soil together
C
The roots cannot break though soil
16) What effect do plants' roots have on soil?
A
meteoroid impacts
B
organic matter only
C
weathering of rocks and organic matter
17) Increasing vegetation will cause erosion to
A
stay
B
increase and later decrease
C
increase
D
decrease
*select an answer for all questions
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