Answer:
reduce the amount of fossil fuels they combust
Step-by-step explanation:
Fossil fuels lead to environmental damage and its burning releases a lot of pollutants especially carbon and sulphur oxide to the air. The carbon increase in the atmosphere may lead to global warming because of the so-called greenhouse effect. To reduce carbon by returning to the normal cycle, humans can reduce the amount of fossil fuels they combust, try converting solid coal to gas or liquid and for removing pollutants or alternatively used renewable energy sources that are less pollutant.