Which of the following is true about natural selection? A. Natural selection does not cause a species to change. B. Natural selection is the only cause of changes in a species. C. Natural selection usually causes a species to change gradually. D. Natural selection usually causes a species to change suddenly.
These are all true except "D. Natural selection usually causes a species to change suddenly," which is false. Natural selection and the subsequent changes to a species takes many thousands of years to have observable results.
