Geologic Time

The longest subdivision in geologic time

This division of Geologic Time had tropical climates and warm shallow seas

A type of organism that no longer exists

Eras are divided into

The Cenozoic Era is often called the Age of

This division of Geologic Time is characterized by major ice ages

Dinosaurs were dominant in which era

Humans first appeared during what era

The Paleozoic, Mesozoic, and Cenozoic are divisions called

A record of the life forms and geologic events in history

Volcanoes made life difficult during this part of Geologic Time

Which era has been divided into epochs

The process by which certain organisms survive and reproduce

Flowering plants were most common during what era

Geologic Time is divided into units based upon types of

Which era consisted of ferns, mosses, and come-bearing plants

Species changing over time to survive and reproduce in their environment are undergoing what process

The division of Earth's history into smaller units makes up the

Name the era,period, and epoch in which we live

The characteristics that some animals can camouflage themselves from their predators is an

Examples of natural factors that cause extinction are

Examples of man-made factors that cause extinction are

The formation of oceans and the atmosphere had the most influence on what Geologic Time

What do scientists think caused the mass extinction of dinosaurs at the end of the Mesozoic Era

The order of the Geologic Time Scale ( Longest to Shortest ).