the geologic time scale is, starting with the youngest and ending with the oldest: group of answer choices cenozoic, mesozoic, paleozoic, precambrian. paleozoic, mesozoic, cenozoic, precambrian. cenozoic, paleozoic, mesozoic, precambrian. mesozoic, cenozoic, paleozoic, precambrian. cenozoic, precambrian, paleozoic, mesozoic.