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Question
Humans have dramatically altered the rate of nitrogen fixation into forms usable by autotrophs ________.A) by burning fossil fuels to meet our energy needs
B) because of the erosion of farmlands through poor agricultural practices
C) as we produce synthetic fertilizers and apply them to crops, lawns, and parks
D) by using antibiotics to reduce the numbers of denitrifying bacteria
E) by selectively removing leguminous plants
Answer
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Related questions
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