10 Questions
During which geological era did the Cambrian Explosion occur?
Paleozoic
What possible environmental conditions contributed to the Cambrian Explosion?
Shallow warm waters
Which type of organisms resulted from the Cambrian Explosion?
Aquatic life forms
What was the adaptive advantage of hard-bodied animals during the Cambrian Explosion?
Better defense against predators
Which group of animals are considered the ancestors of insects, spiders, and crustaceans?
Arthropods
What is the most recent eon in the geological time scale?
Phanerozoic
How many periods is the Paleozoic era divided into?
6
What was a result of the increase in oxygen levels in the atmosphere during the Cambrian Explosion?
The emergence of complex life forms
What was a characteristic of brachiopods that evolved during the Cambrian Explosion?
Hard-bodied with shells
What was a benefit of having a hard-bodied shell during the Cambrian Explosion?
Provided good defence against predators
Explore the geological timescale starting from eons down to periods. Learn about the Phanerozoic eon divided into three eras: Cenozoic, Mesozoic, and Paleozoic, and delve into the incredible Cambrian Explosion.
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