Unit Test — Unit test Answers

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Which of the following methods of agriculture is the most reliant upon technology and automation?

A
rangeland grazing
B
American agriculture
C
traditional rice cultivation
D
Dutch agriculture
5

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.
6

Which of the following is not true concerning cover crops?

A
they prevent soil erosion
B
they can fix nitrogen in soil
C
they are sold as cash crops
D
they add organic matter to soil
11

Rainforest deforestation is contributing to _______.

A
a decline in global biodiversity
B
the reduction of greenhouse gases
C
increased soil moisture
D
increased drug discoveries
14

Soil fertility is best described as being dependent upon _______.

A
the balance between organic matter and mineral nutrients
B
soil color and the local climate
C
topography and the local climate
D
soil texture
16

Which of the following is not a reason that humans genetically engineer trees?

A
insect resistance
B
pharmaceutical production
C
faster growth
D
none of the above
20

The promotion of companies’ sustainably harvested rainforest products is intended to _______.

A
produce cheaper products
B
promote overconsumption
C
give the company a competitive advantage
D
produce more expensive products

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