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Question
The large size of insects and amphibians during the Pennsylvanian period has been suggested to be due to ________.A) a lack of predators for early land forms
B) an excess of sunlight and water during that time
C) an excess of oxygen during that time
D) a decrease in methane in the atmosphere during that time
E) the emergence of a super continent that allowed greater areas for animals to evolve
Answer
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