earth science time period test

the geologic time scale is a record of

various ways that organisms can be fossilized

what do index fossils found in rock layers in different areas of the world indicate about the rocks layers

what type of rock do fossils occur in

what law supports the following statement? if one rock body contains fragments of another rock body it must be younger than the fragments of rock it contains

on a geologic column, where are the oldest rocks located

explain the law of cross cutting relationships

explain the law of superposition

what does radioactive dating enable geologists to determine

define radioactive decay