Nitrogen-fixing bacteria are prokaryotic microorganisms that are capable of transforming nitrogen gas from the atmosphere into “fixed nitrogen” compounds, such as ammonia, that are usable by plants.
. This molecule is exceptionally stable and unable to be used by plants. The Lewis dot structure of
N
2
is
: N :::N:
The triple bond between the two nitrogens is very strong. However nitrogen fixing bacteria can attach to the the unused paired electrons on the outside of the nitrogen molecule. The bacteria use the energy from the broken bond for life functions and produce Nitrates and Nitrites as by products. Nitrates (
Clownfish have a "symbiotic" relationship with sea anemone. Meaning they benefit from living with the sea anemone, and the sea anemone benefits from the presence of the clownfish.
