A surprise party was thrown for Sasha. Is it descriptive, quantitative, proper, or indefinite​

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.

Ais a group of people living and working under a set of rules and traditions.

Adolescents can display egocentrism when they become about changes in their lives.