Earth's Biological History 8th Grade (1)

Match it! Select the correct answer from the pull down...Good luck!

This is the geologic time span dominated by Marine life, shallow seas, early land plants and the first reptiles

What are eras broken down in to?

What is the period in which we currently live in called?

This the geologic time span in which mammals were dominant, flowering plants are dominant and humans emerge

These are an example of an index fossil that lived during the Paleozoic Era

Ice Ages occurred during the geologic time period causing it to be relatively cooler than other time spans.

Any trait or behavior that helps an organism survive and reproduce

What states that each rock layer is older than the one above it?