What decade saw the desegregation of schools and public places in the U.S.??

A new synthetic narcotic has been developed by the pharmaceutical industry. This drug, called Drug A, has three times the efficacy of an existing synthetic narcotic, Drug B. However, Drug B has twice the affinity for opiate receptor sites in the body as Drug A. Which drug will have the greater effect when administered at the same dosage?

A) Drug A B) Drug B C) Identical effects when administered at the same dosage D) Cannot be determined by the information given

Flammable liquids that mix readily with water are:

A. polar solvents. B. viscous liquids. C. fluorosurfactants. D. hydrocarbon fuels.