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What are the 4 main geological eras (oldest to newest)?
Precambrian, paleozoic, Mesozoic, Cenozoic
What era is known as the Age of Mammals?
Cenozoic Era- humans and mammals appeared
What era is known as the Age of Dinosaurs?
Mesozoic Era- dinosaurs, birds, and flowering plants.
What era is known as the Age of Ancient Life?
Paleozoic Era
Which is the oldest era on Earth?
Precambrian
In which era are we living now?
Cenozoic Era
Which major event ended the Mesozoic Era?
A mass extinction (meteor impact) killed the dinosaurs
What appeared during the Precambrian Era?
The first bacteria and single-celled life