What are the three main elements of an effective introduction for an informative essay? A-the hook, supporting evidence, and examples
B- transitions, examples, and thesis statement
C- the hook, background information, and supporting evidence
D-background information, examples, and supporting evidence

The process of rocks breaking down and becoming other rocks

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.

Which organelle is marked with an x?