After the oil spill in the gulf of mexico, one of the treatments included the addition of harmless, oil-eating bacteria. how could this be better than more traditional methods of cleaning up oil spills? a. when the bacteria finally die, it removes needed oxygen from the water. b. the addition of other harmful chemicals may be needed to speed up the process. c. the use of the bacteria, alone, could take years to completely remove the oil. d. the bacteria can break down harmful substances into simpler, less toxic substances.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: