Chloroplasts. A are found inside the motochondria. B provide structure and support for plant cells C allows plants, algae, and certain bacteria to make their own food D are also found in animal cells, but they are much smaller

It can be classified based on its

Answer is: hydrogen is being oxidized.chemical reaction: co₂ + h₂ → co + h₂o.oxidation half reaction: h₂ → 2h⁺ + 2e⁻.reduction half reaction: c⁺⁴ + 2e⁻ → c⁺².oxidation is increase of oxidation number, hydrogen change oxidation number from neutral charge (in molecule of hydrogen) to oxidation number +1 (in water).