A) At present it is not possible to grow maize without chemical fertilizers.
B) Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies.
C) Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants
D) Cyanobacteria such as Anabaena m Nostoc are important mobilizers of phosphates and potassium for plant nutrition in soil.
Correct Answer: B
Solution :
The Agricultural run-off contains high concentration of chemical fertilizers. Which is discharged in nearby lakes causing nutrient enrichment of called eutrophication.
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