This document provides information about evolution, including definitions of macroevolution and microevolution. It outlines several pieces of evidence that support the theory of evolution, including the fossil record, selective breeding, and homologous structures. The key mechanisms of evolution discussed are variation within populations, the struggle for survival due to overproduction of offspring, sexual reproduction as a source of variation, and natural selection leading to evolution as individuals with favorable traits are more likely to survive and pass on those traits. The document also gives examples of antibiotic resistance in bacteria and industrial melanism in moths as cases of evolution in response to environmental change.