Biology

6th

grade

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Invasive species

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30 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt

    Which of the following sentences BEST shows the high reproduction rates of lionfish?

    The fish mature in a year and females can spawn every four days, pumping out 2 million eggs a year.

    The lionfish population exploded in the Florida Keys and the Bahamas between 2004 and 2010.

    "They're moving into new areas and, when they get settled, the population increases pretty quickly."

    Lionfish now are more common in the Bahamas than their home waters.

  • 2. Multiple Choice
    5 minutes
    1 pt
    Eradication of non-native species is a difficult task. Prevention is easier. Why?
    There are no natural diseases or predators for invaders so they grow exponentially.
    The species have a higher reproductive rate than native species.
    The species can successfully out-compete native species.
  • 3. Multiple Choice
    5 minutes
    1 pt
    The electric fence is "keeping" the Asian Carp out of the Great Lakes so far according the the Army Corp or Engineers. What potential problems will the fish pose if they get in.
    A physical danger to boaters
    They may eat too much of the base of the food chain.
    They may be a new source of food.
    A and B only
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