You would like to test the hypothesis that ammonia-oxidizing Archaea are more active and abundant than ammonia-oxidizing Bacteria in coastal marine water. What technique(s) or experiment(s) could you use to test this hypothesis?
A) environmental proteomics B) fluorescent in situ hybridization (FISH) C) stable isotope probing using ¹⁵N labeled ammonia D) stable isotope ratios of ammonia and nitrite