What term is used for organisms that obtain their carbon from atmospheric CO2 and their energy by oxidizing simple inorganic substances?

Explanation

Chemoautotrophs are organisms that use carbon dioxide from the atmosphere as their carbon source and derive energy through the oxidation of inorganic compounds. In contrast, photoautotrophs obtain energy from sunlight, saprotrophs feed on decaying organic matter, and heterotrophs consume organic compounds for both energy and carbon.