Rock layers at the bottom of a geologic deposit are theMultiple choice question.heaviest.youngest.oldest.most radioactive.

Which rock layer is the oldest?

List the names of the rock layers in the order in which they were formed. Oldest Youngest

Which statement explaining the age of the rock layers best supports the answer to Part A?​   ARock layers that contain fossils are always the oldest rock layers and can be used to determine the ages of rock layers above them.BGeologic events like earthquakes can erase rock layers from the geologic timescale and make it difficult to know the ages of different rock layers.COlder rock layers will always be directly below younger rock layers unless they have been disturbed by geologic activity.DRock layers that are the thickest are the oldest because they represent a longer span of time in which the rock layer was formed

Fossils present in ______ layers of rock are older, according to the principle of superposition.Multiple choice question.lightersandierlowerhigher

, , 8. Which is the youngest event? (a) The intrusion of rock layers (b) The formation of rock layers