68. Identify which one is FALSE.
(A) Nitrogen-fixing microbes provide energy for carbon fixation.
(B) Both eukaryotes and prokaryotes can assimilate nitrogen into organic compounds.
(C) Nitrogen may be a limiting plant nutrient, although the atmosphere is 80% nitrogen gas (N2).
(D) Bacteria obtain energy from nitrification.
(E) Denitrifying bacteria obtain oxygen gas (O2) from nitrogenous compounds.