What local government have all the power

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

What are the answersthe words need to be put in the correct spotsabsolveadamantamiableanimosityantagonisteccentricencounterepitomemalign

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.