Which of the following levels of classification is the most specific?

species

domain

kingdom

class

Your Linnaean system (Classification system) goes like this:

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Genus and species makes up your binomial nomenclature (scientific name). Ex.) Canis Lupus

The Linnaean system goes from the big-to-small.
Thus, species is your smallest level.

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

Polymerization reaction