Luis is a mexican american man who says terrible things about african americans when he is with his mexican american friends. when they encounter a group of african americans on the street, luis smiles, says "hello," and passes by. robert merton would describe luis as a(n):

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

Carbon tetrachloride is a toxic liquid. a carbon tetrachloride molecule has one atom of carbon and four atoms of chlorine. what is its chemical formula?

Rick is a toddler with an easy temperament and active nature. people are often seen stopping to talk to him in supermarkets and parks where his mother takes him in the evenings because he smiles willingly at other children and adults. this aspect of rick’s behavior most likely reflects a(n) active genotype–environment interaction suppressive genotype-environment interaction passive genotype–environment interaction evocative genotype–environment interaction