Science

6th -

8thgrade

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Organism Interactions in Ecosystems

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8 questions

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  • 1. Multiple Choice
    3 minutes
    1 pt
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    The graph here shows the populations, over several years, for two animals that share a habitat. Lynxes are mammals that hunt for food, and snowshoe hares are a common prey animal for the lynx. According to the data, in which year did the population of lynx increase that is most likely a result of an increase in the availability of a source of food?

    1925

    1905

    1885

    1855

  • 2. Multiple Choice
    3 minutes
    1 pt

    A decrease in population of an organism would most likely be associated with which of the following?

    A decrease in the prey of the organism.

    An increase in the prey of the organism.

    More habitat available to the organism.

    A decrease in predators of the organism.

  • 3. Multiple Choice
    3 minutes
    1 pt

    What data would be MOST helpful to support the claim that the population of a certain animal is dependent on the amount of area available in its habitat.

    The number of offspring (babies/children) born in a certain year, along with the amount of area available to the animal.

    The population information over several years, along with the amount of area available to the animal.

    The number of animals that died over a period of years, along with the amount of area available to the animal.

    The number of predators that are found over a period of years, along with the amount of area available to the animal.

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