Put the steps of the nitrogen cycle in order, starting with the step that
removes nitrogen from the atmosphere.
1. animals ingest nitrogen in nitrate-containing food after plants use
nitrogen containing compounds,
11 organic matter decays via decomposers.
11 n2 molecules break apart via nitrogen-fixing bacteria.
†
n, is formed via denitrifying bacteria.

Nitrogen Cycle steps:

N molecules breaking apart via nitrogen-fixing bacteria.

Animals ingest nitrogen in nitrate-containing food after plants use nitrogen-containing compounds.

The organic matter decays via decomposers

N2 is formed via denitrifying bacteria.

Explanation:

The nitrogen-fixing bacteria removes atmospheric nitrogen by fixing nitrogen through nitrification. The atmospheric nitrogen cannot be absorbed by plants and hence has to be converted into nitrates. This conversion takes place by nitrifying bacteria present in leguminous plants.

Animals (herbivores) consume the plants that have absorbed nitrogen/

When these animals die, decomposing bacteria acts on the dead organic matter, decomposition takes place through ammonification, converting the organic nitrates into ammonia

The nitrates are converted back again to nitrogen by the action of denitrifying bacteria.  

The nitrogen thus formed is released to the atmosphere

Hello!

They both provide energy

Both proteins and nucleic acids provide energy, but they provide different types of energy, and protein provides more energy than nucleic acids.

I hope this helps, and have a nice day!