Earth's Biological History

What is a record of the major events and diversity of life forms present in Earth’s history?

• relative age

• geologic time scale

• fossil record

• sedimentary profile

What is the earliest span of time in Earth's history?

• Cenozoic

• Paleozoic

• Precambrian

• Mesozoic

During which era of time are fossils of invertebrates, fish, cone-bearing plants, and evidence of the formation of Pangaea found?

• Cenozoic

• Paleozoic

• Mesozoic

What are the 3 large divisions of time called that are located between Precambrian and Present day?

• sections

• epochs

• periods

• Eras

At the end of the Paleozoic Era, there was a mass extinction of which organism?

• Dinosaurs

• Marine Invertebrates

• Insects and Arachnids

• Small mammals

When does the geologic time scale begin?

• when Earth formed

• when evidence of the first fossil was formed

• when evidence of the first plants were found

• when Pangaea formed

Eras are divided into which smaller division of time?

• epochs

• periods

• years

• millenniums

Within which era of time do we now live?

• Paleozoic

• Mesozoic

• Cenozoic

During which era of time did flowers, humans, and new large mammals appear in the fossil record?

• Cenozoic Era

• Mesozoic Era

• Paleozoic

What was the first 1st period of time when there was a relatively rapid appearance of most major animal divisions in the fossil record?

• Jurassic

• Cambrian

• Devonian

• Permian