1. Question : Which of these statements is most accurate about the amount of rangelands
Student Answer: About 2 % in the United
States and 5% in world
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About 50% in the United
States and about 70% in the
World
About 95% in the United
States and 95% in the World
No rangelands exist now
because of invasive plants
Points Received: 1 of 1
Comments:
2. Question : What is the most important single environmental factor in determining the productivity
of rangelands?
Student Answer: Management
Fertility of the soil
Precipitation
Proper vegetation
Points Received: 0 of 1
Comments:
3. Question : If you were traveling from west to east across the Great Plains in the United States
what would be the correct sequence of grassland types that you would encounter?
Student Answer: Tallgrass prairie; shortgrass
prairie; midgrass prairie
Tallgrass prairie; midgrass
prairie; shortgras prairie
Midgrass prairie; shortgrass
prairie; tallgrass prairie
Shortgrass prairie; midgrass
prairie; tallgrass prairie
Points Received: 1 of 1
Comments:
4. Question : Rangelands can be described as
Student Answer: Uncultivated land dominated
by native plants: grasses,
grasslike plants, forbs, or
shrubs.
All land that is not farmland,
dense forest, barren desert
or land covered by solid rock,
concrete, or glaciers
Uncultivated and
undeveloped lands that are
used for grazing, wildlife
habitat, watersheds as well
as recreation and other
multiple uses.
All of the above
Points Received: 1 of 1
Comments:
5. Question : In the rangeland succession model what are some of the factors that keep
rangelands from progressing toward climax?
Student Answer: Drought
Grazing pressure
Above average precipitation
All of the above
A and B only
Points Received: 1 of 1
Comments:
6. Question : What happens to roots after grazing of the above ground vegetation?
Student Answer: the roots are unaffected as
long as grazing takes place
above ground
Root mortality and
decomposition may begin
within 3648 hours after
grazing 50% of the above
ground vegetation
They completely die and then
start to regrow
Grazing stimulates the
growth of roots, so root
growth is accelerated.
Points Received: 1 of 1
Comments:
7. Question : Most (over 50%) of the commercial timberland in the United States is owned by which
of these groups?
Student Answer: Private individuals
Public agencies
Commercial industries
Private industries
Points Received: 1 of 1
Comments:
8. Question : The U.S. Forest Service was established in 1905, to sustain the forests for future use.
Who was the president of the US who was responsible for the establishment of the
National Forests.
Student Answer: Ronal Reagan
George Washington
Abraham Lincoln
Theodore Roosevelt
Points Received: 1 of 1
Comments:
9. Question : Who was the first Chief of the Forest Service
Student Answer: Aldo Leopold
John Muir
Gifford Pinchot
Fife Symington
Points Received: 1 of 1
Comments:
10. Question : The largest contiguous ponderosa Pine Forest is located in:
Student Answer: Texas
California
Washington
Arizona
Points Received: 1 of 1
Comments:
11. Question : Typically Ponderosa Pine trees live to be about:
Student Answer: 1000 years old
100 years old
300 years old
10,000 years old
Points Received: 1 of 1
Comments:
12. Question : In their natural (pre European Settlement) conditions Ponderosa pine forests were
generally:
Student Answer: More densely populated than
now
Less densely populated than
now
Points Received: 1 of 1
Comments:
13. Question : What factor is most responsible for increasing mortality of trees by catastrophic fire?
Student Answer: A decrease in natural fire
during the past 100 years
An increase in natural fire
over the past 100 years
Increased anthropogenic
impacts in the Forest
Decreased fire suppression
during the past few decades
Points Received: 1 of 1
Comments:
14. Question : A colorless gas produced by motor vehicles and some industrial processes is most
likely:
Student Answer: Hydrogen Oxides
Sulfur Oxides
Nitrogen Oxides
Carbon Monoxide
Points Received: 1 of 1
Comments:
15. Question : While walking down a mountain pass, you see a factory town at a distance in the
valley below. You can see that most of the pollution from the smokestacks appears
capped as if by an invisible lid, so that it cannot spread out of the valley to the air
above. What is the name of such a phenomenon?
Student Answer: Anticyclone
Temperature conversion
Temperature inversion
smog
Points Received: 1 of 1
Comments:
16. Question : Which of the following are major atmospheric pollutants?
Student Answer: Particulates
Carbon dioxide
Nitrogen
oxygen
Points Received: 1 of 1 [Show Less]