Effects of Cycles on Ecosystems Answers

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1
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Geoengineering will have no negative effects on the environment.

A
T
B
F
2
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Cycles are essential to all living organisms.

A
T
B
F
3

One reason that rainforests have more precipitation than deserts is _______.

A
plants in the desert experience a large amount of transpiration
B
plants in the rainforest release a large amount of water to the atmosphere
C
plants in the rainforest experience a small amount of transpiration
D
the fewer plants an area has, the smaller the amount of transpiration there is
4

Where do animals obtain carbon?

A
the atmosphere
B
plant and animal consumption
C
the soil
D
photosynthesis
5

What is desertification?

A
method of using desert land for agriculture
B
the process of turning arable land into deserts
C
drying up of stream beds and lakes
D
the expansion of current deserts land areas
6

Carbon is found only in living organisms.

A
T
B
F
7

Fluctuations in the phosphorus cycle in aquatic ecosystems _______.

A
can lead to changes in the growth rates of aquatic populations
B
are never caused by human impact on the environment
C
lead to a decrease in the amount of phosphorus found in sediment
D
never occur naturally
8

The desert relies on precipitation from weather patterns, while the rainforest can create its own precipitation.

A
T
B
F
9

A large portion of precipitation in the rainforest occurs as a result of _______.

A
perspiration
B
respiration
C
oxidation
D
transpiration
10

The cycling of carbon throughout the environment is critical to ensuring the survival of all organisms. Suppose a mountain lion kills a deer in the forest. Photo by US Department of Agriculture What would likely happen first to the carbon in the deer carcass as it lies on the forest floor after the mountain lion has finished feeding on it?

Question illustration
A
It would be incorporated into other organisms.
B
It would be released back into the atmosphere.
C
It would be turned into coal.
D
It would be incorporated into the soil.

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