NGSS MSLS 4-4 Power Point covering natural selection and adaptations. 20 Slides Covers Darwin, his observations about tortoises and finches, great pictures to help explain as well as a main idea and summary. Definitions include natural selection, overproduction, variation, inherited variation, adaptations, structural adaptations, camouflage, mimicry, behavioral adaptations, and extinction. Check out my worksheet on TPT to check for understanding.