to avoid drowsiness and complaints of stale air, the amount of carbon dioxide in a workplace must not be greater than 1,000 parts per million )ppm) how would you write and inequality to show the amount of CO2 in parts per million that would cause complaints of stale air

The inequality to show the amount of CO2 in parts per million that would cause complaints of stale air is:

CO2 > 1000 ppm