Which kingdom(s) include organisms that are autotrophic or heterotrophic?

The correct answer is Protista and Eubacteria.

Explanation:

Autotrophs refer to the species, which can produce their own food by utilizing components available in their surroundings with the assistance of either light energy or chemical energy. On the other hand, heterotrophs cannot produce their own food and rely on plants or animals as the source of their food.  

Of all the kingdoms, the Protista and Eubacteria comprise heterotrophs and autotrophs. For example, protozoa, that is, the animal-like protists refers to the heterotrophs, which absorb or ingest their food. The slime molds, that is, the fungus-like protists are also heterotrophic, cyanobacteria that are a blue-green alga is a photosynthetic bacteria, which belongs to Eubacteria.  

the answer is:

carbon dioxide

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.