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    Geology/Geography/Oceanography/Atmospheric Sciences
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    Scientific American Environmental Study Set 1
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    Exam 8: Ecosystems and Nutrient Cycling- Engineering Earth: an Ambitious Attempt to Replicate Earths Life Support Systems Goes Awry
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    Which Choice Best Represents the Factor(s) That Is(are) Directly Involved
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Which Choice Best Represents the Factor(s) That Is(are) Directly Involved

Question 64

Question 64

Multiple Choice

Which choice best represents the factor(s) that is(are) directly involved in nitrogen fixation?


A) decomposition
B) bacteria
C) lightning
D) choices A and B only
E) choices B and C only

Correct Answer:

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