To create a sharp contrast in a composition, which type of colors should be used

Whatwhat does the figurative language he kept his eyes on the rocky peaks that jutted into the sky jagged sharks teeth."mean

Poussin was responsible for establishing what as a key component of 17th century french art

In areas where even the experts disagree; everyone has a right to his own opinion. i mean if answers aren’t given just like in lots of things; then it has to be just anyone’s opinion. is this dualism multiplicity relativism or commitment