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3 votes


Which of the following can fix nitrogen?
 Answer













 


A.human industrial processes









 


B.lightning









 


C.certain bacterial species









 


D.all of the above





User Marieliz
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2 Answers

6 votes
The answer is (D) all of the above.
User Holger Adam
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6 votes
d . all of the above .
User Remon Amin
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