A decrease in the population of decomposers can cause a decrease in carbon dioxide in the air (abiotic matter) of the biodome. True or false?

The answer is false, because in order to decompose organic matter, decomposers take CO2 from the environment and thus generate organic decomposition.

This sentence can be misinterpreted and be confused since the explanation explains the method of CO2 release from the decomposers, but in a non-polluting way.

Explanation:

Decomposing organisms are responsible for an increase in CO2 since they transform the complex molecules of organic matter into simple inorganic compounds such as carbon dioxide, water and mineral sales that return to the substrate to be used as nutrients by producers.

Although it is important to keep in mind that this is insignificant in comparison to human contamination since CO2 is mostly released to the earth and used as NATURAL FERTILIZER and very little to the air or the gaseous environment.

the answer to this question is 3.