Final answer:
Slicing carrots is not a method for converting organic nitrogen to nitrogen gas.
Step-by-step explanation:
The process that is not involved in the conversion of organic nitrogen to nitrogen gas is slicing carrots. This is because the conversion of organic nitrogen to nitrogen gas primarily occurs through microbial processes in the environment, such as denitrification, which is carried out by certain bacteria. Slicing carrots is a physical process and does not involve the conversion of nitrogen.