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MCAS QUESTION OF THE DAY:
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2006, QUESTION 11 - Grade 8  

The praying mantis is a predatory insect that often eats moths. The graph below shows the relative numbers of two species of moths over 12 weeks after the introduction of the predatory praying mantis.

a graph

What characteristic of this ecosystem is best indicated from this graph?

 
 
 
 

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