Plants and animals depend on each other and their physical environment.
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Q 1/14
Score 0
Sharks are often followed by smaller fish that eat some of the scraps from the organisms eaten by the shark. These smaller fish are acting as
60
producers
decomposers
herbivores
scavengers
Q 2/14
Score 0
Under the supervision of experts, certain areas in a nature preserve are regularly exposed to frequent, low-intensity fires. These controlled fires maintain specific populations of plants by directly
60
stopping the process of evolution
increasing the consumption of fi nite resources
decreasing the carbon dioxide level in the atmosphere
interfering with the process of ecological succession
14 questions
Q.
Sharks are often followed by smaller fish that eat some of the scraps from the organisms eaten by the shark. These smaller fish are acting as
1
60 sec
4.6
Q.
Under the supervision of experts, certain areas in a nature preserve are regularly exposed to frequent, low-intensity fires. These controlled fires maintain specific populations of plants by directly
2
60 sec
4.6
Q.
A stable ecosystem can have high biodiversity because each species in that ecosystem
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4.6
Q.
Stability within an ecosystem is achieved partially by the presence of organisms that break down important molecules and make them available for other organisms to use. These organisms are
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4.6
Q.
This sequence of rock layers best illustrates the concept that
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4.6
Q.
In the pyramid, the arrows labeled X represent
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4.6
Q.
The graph can best be used to illustrate
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4.6
Q.
If the grass in the front yard of an abandoned house is not cut for several years, the yard may become overgrown with taller grasses, bushes, and shrubs. This is an example of the process of
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4.6
Q.
Recently, oil from a wrecked tanker resulted in a disaster in ecosystems containing many unique species. The potential loss of these species could result in
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4.6
Q.
Which process occurs at each link in a food chain?
10
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4.6
Q.
Mistletoe is a plant that lives on the branches of trees. The mistletoe plant sends its roots in through the bark of trees and takes away water and minerals that the tree needs. In this situation, the mistletoe plant is
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4.6
Q.
A rich variety of genetic material in an ecosystem will
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4.6
Q.
Which statement best explains why this does not happen?
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4.6
Q.
The two most likely factors contributing to the decline in the number of these 115 sparrows during year 1 were
