Final answer:
The false statement about the nitrogen cycle is that nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
Step-by-step explanation:
The false statement about the nitrogen cycle is d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds. Nitrogen fixing bacteria actually convert nitrogen gas (N2) into ammonia (NH3) or ammonium (NH4+), which can then be used by plants for growth. This process is known as nitrogen fixation and is necessary to make atmospheric nitrogen available to living organisms.