What relatively recent epoch ended roughly 12,000 years ago?

The statement Rock A is seventeen years old is an example of _____.

Which of the following is the term used for the process by which an unstable atomic nucleus loses energy by releasing radiation?

Not all parts of a creature are likely to be fossilized. Paleontologists typically find fossils made from a creature's _____.

An interface between discontinuous layers of rock is called _____.

The Mesozoic Era was the Age of Dinosaurs, and the current Cenozoic Era is the Age of _____.

Any fault lines or igneous intrusions that cut across a set of rock strata must be _____ that set of rock.

A geologist who asserts that evolution patterns in the Earth occur following a consistent pattern over long periods of time belongs to what family of theorists?

Which geological principle only applies to sedimentary rock layers?

A particular radioactive isotope has a half-life of 200 years. At what time will there be 25% of the isotope left?

Rock Strata A contains Fossil X. It is below Rock Strata C which contains Fossil Z. Rock Strata B contains Fossil Y. It is above Rock Strata C. Which of the following is the correct order of the fossils (from oldest to youngest)?

Why do many geologists study layers of strata?