Module 13: UT Instapoll
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4 Terms
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Which of the following is NOT a correct portrayal of community interactions?
Competition + -
2
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Which of the following is the best example of a commensalism (+/0) ?
Cattle egrets eating insects stirred up by grazing cows
3
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Why do introduced species often become invasive species and spread rapidly in the new area?
Lack of specific parasites & predators
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The video of the food web in the Yellowstone National Park talked about different species interactions. When the wolf populations increased, the deer populations grazed less in the valleys and the aspens grew taller. This would be an example of what?
Top-down control
Note 
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