Today First Found Fossil Beginning of Earth Precambrian Time -Iridium Layer Two fossils found in the rock layers are shown. Fossil 1 Fossil 2 Which explanation BEST applies the rock layer phenomena to the relative age of these fossils? A B The relative age of the organisms from Fossils 1 or 2 cannot be determined because the rock layers are different. Fossil 1 is from an older organism than Fossil 2 because it appears in more than one rock layer.
