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A 2012 study led by studied the impacts of fertilizers containing nitrogen in a plant population. Another study led by Kimberly La Pierre in 2015 looked at fertilizers and two other nutrients: phosphorus and potassium.
|Question 20Verbal
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Which choice completes the text so that it conforms to the conventions of Standard English?
ecologist, Alex K. Dittrich
A
ecologist Alex K. Dittrich,
B
ecologist Alex K. Dittrich
C
ecologist, Alex K. Dittrich,
D