In which of the following ways could humans the carbon cycle return to normal

reduce the amount of fossil fuels they combust

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.

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.