Duplicate of Geologic time

This is an example of a hard part of an organism that can be fossilized

The last period in the Mesozoic Era was the Cretaceous. What happened at the end?

Oceans began to form and islands began to appear during this time period.

At the end of which period in the Paleozoic era was there a major mass extinction?

The word means it no longer exists and will never live again on Earth.

95% of life became extinct during this period.

A carbon film will preserve the delicate parts of:

The trilobites lived during only one era. Which one?

What has the study of fossils allowed scientists to do?

During what period did the largest dinosaurs live?

What was the first ERA in Earth's geologic history?

The Cenozoic Era is our current era. What period within the era are we in right now?

Late in the Paleozoic, the Pangaea formed. The climate in the center of it was probably:

Geologists use radioactive dating to:

The time it takes for half of a radioactive atoms in a sample of a radioactive element to decay

The first fossil can be dated back to this time period.

The relative age of rock is:

This forms when livings things die and are buried by sediment.

What period during the Paleozoic Era was labeled the Age of Fishes?

The relative age of rock is

During the Precambrian Era, most of the life was:

During the Paleozoic, the first organisms to live partly on land were

The study of past life.

What can we learn from fossils?

What ERA was labeled the Age of Reptiles?

Which best describes the climates of Europe and North America during 1.8 my of the Quaternary P

During the Cambrian Explosion, the many new forms of life that evolved:

These are the most common types of fossils

Earth's earliest atmosphere lacked which gas that is necessary for life?