Question

which two processes convert nitrogen compounds into atmospheric nitrogen gas? lightning strikes and erosion bacterial action and burning fossil fuels evaporation and precipitation

Explanation:

Lightning strikes fix atmospheric nitrogen into compounds, erosion does not release nitrogen gas. Evaporation and precipitation are part of the water cycle, not nitrogen cycling. Denitrifying bacteria convert nitrogen compounds (like nitrates) back to atmospheric nitrogen gas, and burning fossil fuels releases nitrogen-containing compounds that can be converted to atmospheric nitrogen gas through related reactions.

Answer:

bacterial action and burning fossil fuels