Ecosystem Overview

The place where an organism lives is its _________.

• habitat
• abiotic
• ecosystem
• community

All of the nonliving parts of an ecosystem are _______.

• biography
• biotic
• abiotic
• biology

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All of the living parts of an ecosystem are _________.

• biology
• biotic
• abiotic
• biography

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A group of organisms of the same species living in the same area are called a/an ________.

• community
• habitat
• population
• ecosystem

All of the living and nonliving things in an area that interact with each other are called a/an ______.

• community
• habitat
• population
• ecosystem

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NGSS.MS-LS2-3

If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease
• stay the same
• increase
• None of the above 

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Field mice eat corn. Which would most likely happen if the field mouse population grew?

• There would be more corn to feed the field mice.
• There would be less corn due to the mice eating it.
• The habitat would get overpopulated because the mice woudl eat too much.
• The mice would plant more corn. 

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Humans are part of the ecosystem and therefore impact it.  Which of the following events in an ecosystem may produce a negative effect?

• preventing deer from depleting food resources
• restoring a natural habitat
• wildlife rangers minimizing disturbances
• a lumbar company clearing a forest

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The Texas Kangaroo Rat, native to north-central Texas, makes its home in mesquite bushes.  If the mesquite bushes are cleared for human homes , which of the following is the most probable result?

• The rat population will rise (increase).
• The rat population will decline (decrease).
• The rat population will stay the same.
• The rat population will double.

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In the 1980's, the water level dropped and the salt concentration doubled in Mono Lake.  How did this affect the brine shrimp population that lives there?

• The brine shrimp population increased.
• The brine shrimp population decreased.
• This did not affect the brine shrimp population.
• What are brine shrimp?

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