Consider i Aerobic heterotrophs use organic matter for carbon and energy;ii They use CO₂ for both;iii Aerobic autotrophs use CO₂ carbon and reduced substances for energy;iv They use organic matter for energy.
Heterotrophs assimilate organic carbon and, in the stated chemoheterotrophic context, oxidize organics for energy. Chemolithoautotrophs assimilate inorganic carbon and obtain energy from reduced inorganic donors. Therefore i and iii are correct, ii and iv false in this classification. Select **A**.
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