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Ecosystem Disruptions (7.MS-LS2-4)
Test Description: 7.MS-LS2-4
Instructions: Answer all questions to get your test result.
1) What is the difference between primary and secondary succession?
A
Primary succession begins with bare rock. Secondary succession begins with soil.
B
Primary succession ends with a climax community. Secondary succession doesn't
C
Secondary succession begins with bare rock. Primary succession begins with soil.
D
Secondary succession ends with a climax community. Primary succession doesn't
2) In primary succession, which plants are the first ones to appear?
A
any plants with roots
B
pioneer species
C
climax species
D
primary species
3) Which type of succession is seen after a volcanic eruption?
A
secondary succession
B
volcanic succession
C
climax succession
D
primary succession
4) A climax community is.....
A
unstable
B
still evolving
C
dying
D
stable and diverse
5) Which is NOT an example of a naturally occurring disruption to an ecosystem?
A
deforestation
B
tornado
C
wildfire started by lightning
D
oil spill
6) What is the first step in primary succession?
A
soil getting deeper and richer
B
insects and other small animals arriving
C
grasses and other small plants growing
D
the creation of soil
7) What is the best example of an animal being indirectly impacted by an oil spill
A
a shark losing its food source
B
a dolphin's blow hole getting clogged by oil
C
birds getting poisoned by oil as they clean it from their feathers
D
sea otters getting hypothermia as oil coats fur
8) What happens to plant populations during succession?
A
the populations remain unchanged
B
the populations increase
C
the populations decrease
D
doesn't matter...succession is about animal populations, not plant populations
9) How does deforestation impact populations?
A
Populations usually increase
B
Populations are usually unaffected
C
It depends on why the deforestation happened in the first place
D
Populations usually decrease
10) What happens to oil during an oil spill?
A
it evaporates away
B
It sinks to the bottom of the body of water
C
it floats on top of the water
D
it gets absorbed by the water
*select an answer for all questions
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