Giraffes, camels, and horses share some traits, although they vary in other traits. Which statement accurately describes the evolution of these species?

If there are options for this question, I couldn't find them online but I can tell you that one statement that describes the evolution of these species is that each of them shared an ancient ancestor.

Explanation:

The ancient common ancestor that these species share is that animal, in this case, from which all species descend.

It is the only species of living being that has evolved over the years and its original traits have varied, which led to the creation of all these species. That is why some of those traits will still be shared by them, while others, due to evolution, will not.

That is why we could say that these animals belong "to the same family" since they all come from the same ancestor.

The correct answer is B. denitrification.

Thiobacillus denitrificans are gram-negative chemolithoautotroph i.e., they obtain energy from the oxidation of inorganic compounds such as sulphur, nitrogen etc and uses carbon dioxide as a source of carbon for growth.

It couples the oxidation of sulphur compounds (inorganic) with the reduction of nitrogen compounds such as nitrate, nitrite etc. It results in the formation nitrogen gas ().

The overall reaction can be summarized as:

SO_{4}^{-2} + N_{2} + C_{5}H_{7}O_{2}N (biomass)+ H^{+} + H_{2}O" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=H_%7B2%7DS%20%2B%20HS%5E%7B-%7D%20%2B%20NO_%7B3%7D%5E%7B-%7D%20%2B%20CO_%7B2%7D%20%2B%20HCO_%7B3%7D%5E%7B-%7D%20%2B%20NH_%7B4%7D%5E%7B%2B%7D%20%3E%20SO_%7B4%7D%5E%7B-2%7D%20%2B%20N_%7B2%7D%20%2B%20C_%7B5%7DH_%7B7%7DO_%7B2%7DN%20%28biomass%29%2B%20H%5E%7B%2B%7D%20%2B%20H_%7B2%7DO" title="H_{2}S + HS^{-} + NO_{3}^{-} + CO_{2} + HCO_{3}^{-} + NH_{4}^{+} > SO_{4}^{-2} + N_{2} + C_{5}H_{7}O_{2}N (biomass)+ H^{+} + H_{2}O">