Podcast
Questions and Answers
Which group of organisms was the main life-form during most of Earth's early history?
Which group of organisms was the main life-form during most of Earth's early history?
When did humans first appear on Earth based on the information provided?
When did humans first appear on Earth based on the information provided?
What is a mass extinction?
What is a mass extinction?
Which geologic time unit is the longest?
Which geologic time unit is the longest?
Signup and view all the answers
What marks the beginning of the Phanerozoic eon?
What marks the beginning of the Phanerozoic eon?
Signup and view all the answers
What event could potentially cause a mass extinction, such as the one that led to the extinction of dinosaurs?
What event could potentially cause a mass extinction, such as the one that led to the extinction of dinosaurs?
Signup and view all the answers
What division of geologic time comes after the Proterozoic Eon?
What division of geologic time comes after the Proterozoic Eon?
Signup and view all the answers
Which era is considered the oldest in the Phanerozoic Eon?
Which era is considered the oldest in the Phanerozoic Eon?
Signup and view all the answers
What major event marks the beginning of the Cambrian period within the Paleozoic era?
What major event marks the beginning of the Cambrian period within the Paleozoic era?
Signup and view all the answers
Why do scientists have more knowledge about the Cenozoic era compared to earlier periods?
Why do scientists have more knowledge about the Cenozoic era compared to earlier periods?
Signup and view all the answers
