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pelican

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
linving things in a _ or things that were once alive   environment  
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nonnative_ are aliens to ecoystems   species  
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they or b_ into a new ecosystem either on purpose or a   brought  
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when determing the   impact  
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some examples of nonnative species in   louisiana  
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changes the ecoystem occur very   rapidly  
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many humans work to   conserve  
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the thing that is bad for our inverment   erosion  
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something that is living   trees  
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somthing that is not living   rocks  
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