The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that:
A
Population A consumed the members of population B
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B
Both plant populations in this habitat decreased
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C
Population B competed more successfully for food than population A
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D
Population A produced more offspring than population B
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Solution
The correct option is C Population B competed more successfully for food than population A According to the graph the change in the two populations A and B is because population B competed more successfully for food than A. Population A decreased as it was not well adapted as population B.