Ecosystem Disruptions (7.MS-LS2-4) Question Preview (ID: 58199)
7.MS-LS2-4.
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What happens to plant populations during succession?
a) the populations decrease
b) the populations remain unchanged
c) the populations increase
d) doesn't matter...succession is about animal populations, not plant populations
How does deforestation impact populations?
a) Populations usually increase
b) Populations usually decrease
c) Populations are usually unaffected
d) It depends on why the deforestation happened in the first place
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
What is the first step in primary succession?
a) the creation of soil
b) grasses and other small plants growing
c) insects and other small animals arriving
d) soil getting deeper and richer
Which is NOT an example of a naturally occurring disruption to an ecosystem?
a) deforestation
b) tornado
c) oil spill
d) wildfire started by lightning
Which type of succession is seen after a volcanic eruption?
a) primary succession
b) secondary succession
c) volcanic succession
d) climax succession
A climax community is.....
a) unstable
b) still evolving
c) dying
d) stable and diverse
In primary succession, which plants are the first ones to appear?
a) primary species
b) any plants with roots
c) pioneer species
d) climax species
What is the difference between primary and secondary succession?
a) Primary succession ends with a climax community. Secondary succession doesn't
b) Primary succession begins with bare rock. Secondary succession begins with soil.
c) Secondary succession ends with a climax community. Primary succession doesn't
d) Secondary succession begins with bare rock. Primary succession begins with soil.
What happens to oil during an oil spill?
a) It sinks to the bottom of the body of water
b) it gets absorbed by the water
c) it floats on top of the water
d) it evaporates away
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