Which theoretical perspective views the concepts "bisexual," "heterosexual," and "homosexual" as social inventions?

INTERACTIONISM

Explanation:

Interactionism ,also known as symbolic interaction, is a theoretical perspective that understands social processes (such as conflict, cooperation, identity formation) as emerging from human interaction.

Scholars of this perspective study how individuals act within society and believe that meaning is produced through the interactions of individuals.

According to interactionists, gender stratification exists because people act toward each other on the basis of the meanings they have for one another.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.