Methods of Dating the Earth Part 1: Relative Dating Professor Dave Explains 6:21 9 months ago 39 841 Скачать Далее
In About a Minute: Relative vs. Absolute Dating Peterson's Test Prep 1:31 1 year ago 14 524 Скачать Далее
How Does Radiocarbon Dating Work? - Instant Egghead #28 Scientific American 2:11 11 years ago 1 260 074 Скачать Далее
Learning Relative Dating - Grand Canyon National Park | OutSCIder Classroom OutSCIder Classroom 3:29 2 years ago 2 778 Скачать Далее