AnswersSC332 Environmental Science BSoil and Agriculture

Soil and Agriculture Answers

0 verified answers
1
Free Preview

The high productivity of American agriculture is exemplified by _______.

A
low crop yields per farm worker
B
high crop yields per farm worker
C
the small cultivated area per inhabitant
D
the small cultivated area per farmer
2
Free Preview

Field patterns are the same in all parts of the world.

A
T
B
F
3

How does flooding rice fields reduce the need for herbicides and pesticides in rice farming?

A
While rice has a submerged growth state, most weeds and pests do not.
B
Flooding the fields causes the soil to degrade so weeds cannot take root.
C
Residual herbicides and pesticides from previous seasons dissolve in the water.
D
All of the above
4

What is the purpose of strip cropping?

A
prevent soil erosion
B
maintain nutrient levels
C
reduce plant disease
D
all of the above
5

The main target when controlling the acidity of soils is ______.

A
neutralizing the pH
B
adding base
C
replacing lost cation nutrients
D
eliminating humic acids
6

Which of the following is the most damaging method of soil remediation?

A
soil excavation and disposal
B
soil aeration
C
heating and vapor extraction
D
microbial digestion
7

Which of the following best explains why soil conservation is important to human agriculture?

A
Erosion prevention prevents millions of dollars in damage from mudslides.
B
It is easier to prevent the degradation of old soil than it is to generate new soil.
C
If the soil salinity gets too high crops will not be able to grow in it.
D
Soil contamination is a hazard to human and animal health.
8

Which of the following are some reasons for the variations in agricultural practices around the world?

A
topography
B
tradition
C
amount of rainfall
D
all of the above
9

Contour farming is a method for plowing across the slope of steep hills.

A
T
B
F
10

Why is Dutch agriculture critically dependent upon technology?

A
It produces almost 50% of the world supply of cut flowers and indoor plants.
B
It relies almost exclusively on genetically engineered crops.
C
Dutch agriculture is characterized by plant production in greenhouses.
D
Dutch fruit and vegetable production contributes to the global food supply.

Did you find these answers helpful?

More from this Course

Quiz
21 verified answers

The Importance of Trees

Quiz
17 verified answers

Soil and Agriculture

Quiz
13 verified answers

Rainforest Loss