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During which era did we see the first plants on land?
Paleozoic Era
Which came first? Mammals, Reptiles, Humans
Reptiles
There are __________ eons in the Earth's history.
4
The shortest unit of time on the geologic time scale is __________.
epoch
Eras are divided into ____________.
periods
What is the longest unit of time on the geologic time scale?
eon
What was the first life on Earth?
bacteria
During which era did mammals become the dominant species?
Cenozoic Era
Which era did the first flower appear?
Mesozoic Era
What happens at the end of each era of time?
mass extinctions or major geologic changes
When did Pangea first begin to form?
during the Paleozoic Era
Which era means "Middle Life"?
Mesozoic Era
Which era did reptiles first appear?
Paleozoic Era
Which era means "New Life"?
Cenozoic Era
Which era means "ancient life"?
Paleozoic Era
Which era is known as the Age of Reptiles?
Mesozoic Era
What era did the first life appear?
Precambrian
What era did the first fish appear?
Paleozoic Era
Which era do we currently live in?
Cenozoic Era
Which era is characterized by the presence of small mammals and the appearance of the first birds?
Mesozoic Era
What the longest era in Earth's history?
Precambrian


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