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A. Cook Physical Science ECOSYSTEMS Relationships
and Succession
2
Sunlight
Soil
A
B
Bacteria
Precipitation
C
D
3
100
C. BACTERIAAbiotic factors are
non-living, and bacteria is MOST DEFINITELY ALIVE.
4
An oak tree
A snake
A
B
Sunflower seeds
None of the above
C
D
5
200
A. An Oak TreeHabitat is where an organism lives
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Carrots
A frog
A
B
A Hawk
Marsh grass
C
D
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300
B. A frog. A predator is an organism that
captures and feeds on another organism in this
case-the grasshopper
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A Fungus
Start-up organism
A
B
Dirt-breaker
Pioneer Species
C
D
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500
D. A pioneer species is the first organism to
inhabit an area. A lichen is a common pioneer
species.
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Mutualism
Predation
A
B
Parasitism
Commensalism
C
D
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1,000
B. Predationwhile predation is an interaction
within an ecosystem, it is NOT a symbiotic
relationship
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commensalism
competition
A
B
parasitism
mutualism
C
D
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2,000
C. ParasitismIn the example provided, the tick
feeds on blood from its host. This benefits the
tick, but harms the host.
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Logging
Planting trees
A
B
A new species of birds being discovered.
A thunderstorm
C
D
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4,000
A. Logging which is a form of deforestation
destroys and ecosystem and requires it to be
restored.
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3,1,2
1,2,3
A
B
Primary succession cannot be caused by a receding
glacier.
2,1,3
C
D
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8,000
C. 2,1,3 succession shows a GRADUAL change in a
community over time as seen in the example
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resources
A
B
Biological compounds
Lifes factors
C
D
Details of an ecosystem.
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16,000
B. Resources.
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Succession
Competition.
A
B
Symbiosis
Love
C
D
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32,000
D. Symbiosis...there are 3
types (commensalism, mutualism, and parasitism)
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mates
food
A
B
Space/habitat
All of the above
C
D
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64,000
D. All of the above Competition occurs when
organisms attempt to use the same resource at the
same time.
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commensalism
competition
A
B
predation
mutualism
C
D
25
125,000
A. Commensalisma symbiotic relationship in which
one organism benefits and the other is neither
helped nor harmed.
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A niche has nothing to do with competition
One of the two species will not survive
A
B
One of the two species will move to another
location
Both species will learn to live along side each
other
C
D
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250,000
B A niche is an organisms role in the
environment. One of the two will NOT survive.
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It doesnt, primary succession occurs more
quickly.
The pioneer species are already present
A
B
Because soil is already present and it does not
take as long for plants to establish themselves.
There are animals present to spread the seeds for
regrowth.
C
D
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500,000
C. It takes a very long time for pioneer species
to breakdown rocks and turn into soil therefore
secondary succession occurs much faster because
soil is already present.
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Consumer, herbivore, prey
Consumer, carnivore, predator
A
B
Producer, herbivore, predator.
Consumer, carnivore, prey
C
D
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1,000,000
B. A niche is the role of an organism within an
ecosystem. A niche can be related to it feeding
relationships.
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