Effects of Cycles on Ecosystems Answers

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1
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Plants in the desert _______.

A
effectively conserve and retain water
B
have high levels of transpiration
C
release 50-80% of water back into the ecosystem
D
make their own precipitation
2
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What effect do abiotic cycles have on ecosystems?

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3

Explain how fluctuations in abiotic cycles can influence populations.

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4

Hibernation is _______.

A
an example of an abiotic cycle
B
triggered by changes in the weather
C
caused only by biotic factors
D
triggered by breeding patterns
5

What is a possible consequence of fertilizer runoff in aquatic ecosystems?

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6

Which of the following is not a way in which carbon gases are introduced into the atmosphere?

A
forest fires
B
respiration
C
photosynthesis
D
burning of fossil fuels
7

How do the plants in a rainforest contribute to the water cycle?

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8

Which of the following statements about the phosphorus cycle is true?

A
In living organisms, phosphorus can be found in nucleic acids.
B
Phosphorus in aquatic ecosystems is only found in sediment.
C
Elevated levels of phosphorus in aquatic ecosystems is always beneficial.
D
The soil plays no part in the phosphorus cycle.
9

Explain the role of organisms in the carbon cycle.

Answer not available
10

In the carbon cycle, carbon is found in _______.

A
the atmosphere
B
the soil
C
living organisms
D
all of the above

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