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Pramila Pramila
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7 years ago
What organisms can fix nitrogen gas?
A) symbiotic and free-living bacteria
B) symbiotic bacteria
C) free-living bacteria
D) symbiotic and free-living bacteria, and symbiotic algae
E) free-living bacteria and symbiotic algae
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Environment: The Science Behind the Stories, Canadian Edition

Environment: The Science Behind the Stories, Canadian Edition


Edition: 3rd
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