AnswersSC332 Environmental Science BClimate and Change in Ecosystems

Human Use of Land Answers

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1
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Which of the following statements about pesticides is true?

A
Pesticides provide plants with essential nutrients.
B
Pesticides prevent the destruction of crops.
C
Pesticides are never harmful to plants.
D
Pesticides are never harmful to animals.
2
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The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because _______.

A
migrating waterfowl use flooded rice paddies on their travel routes
B
foraging birds eat leftover rice and trample the ground making tilling unnecessary
C
farmers need migrating bird guano as fertilizer
D
California’s wetlands are dwindling
3

Biological pest control involves _______.

A
eliminating pests with pesticides
B
using biological mechanisms to eliminate pests
C
planting a new crop every year
D
burning crops
4

New ecosystems have been created by human land use.

A
T
B
F
5

How might environmental manipulation of a crop have unexpected consequences?

A
The new crop may require more water than the original.
B
The crop may harm the environment.
C
The yield may be reduced.
D
All of the above
6

Insects are responsible for the destruction of a significant percentage of potential food harvests every year.

A
T
B
F
7

Which of the following best explains why clear-cutting forests is more destructive than selectively cutting down trees in forests?

A
Clear-cutting eliminates all trees leaving none behind to maintain soil fertility or house native animals.
B
Clear-cutting places the land at greater risk for wildfires.
C
Clear-cutting makes land more attractive for human development.
D
Clear-cutting causes less soil erosion than selective cutting.
8

What was an unexpected consequence of the green revolution?

A
The overuse of fertilizer lead to reduced crop yields over time.
B
Crop yields were increased.
C
Modern agricultural techniques were implemented.
D
New crop varieties were developed.
9

Old growth forests are full of sick, diseased, and decadent trees. Please select the best answer from the choices provided

A
T
B
F
10

National parks reduce the human impact on land by _______.

A
permitting limited human development.
B
cleaning up litter
C
preventing human development
D
preventing companies from polluting on public lands
11

Reforestation projects would be more beneficial to forests that had undergone selective cutting rather than clear-cutting.

A
T
B
F
12

Environmental manipulation can result in unforeseen consequences.

A
T
B
F
13

Which describes the difference between national parks and wilderness areas?

A
There are more national parks in the Unites States than there are wilderness areas.
B
Wilderness areas do not allow motorized vehicles and national parks do.
C
National parks prevent pollution while wilderness areas cannot.
D
National parks allow for land development while wilderness areas do not.
14

Harvesting timber (wood) from a forest does not harm _______.

A
soil
B
wildlife habitat
C
animals
D
none of the above
15

Rangeland is best described as land used for _______.

A
farming
B
grazing
C
agriculture
D
ranging
16

The populations of the great apes in Africa are recovering and on the rise.

A
T
B
F

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