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