A way of classifying organisms into categories based on their similarities. Question 3 options:

animals & species

cells

energy

function

animals and species

Explanation:

Describes the Linnean taxonomy, a way of classifying organisms in a hierarchy based on similarities and physical traits, as well as binomial nomenclature.

The three most commonly used methods are phenetics, cladistics, and evolutionary taxonomy. Some taxonomists use a combination of several of these different methods. Groups of organisms in taxonomy are called taxa (singular, taxon). You may already be familiar with commonly used taxa, such as the kingdom and species. A kingdom is a major grouping of organisms, such as plants or animals.

the answer will be a) proteins i believe

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.