Major Events in Geologic Time (Grade 10)
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Major Events in Geologic Time
Order the major events in Earth's history from 1, earliest, to 15, the most recent.
Age of Amphibians
Early hominids appear
One-celled organism appear
Formation of Earth
Mass extinction of mammals at end of last ice age
Early mammals and dinosaurs appear
Cambrian explosion
Supercontinent Pangaea beings to break apart
Age of oldest known rocks
Mammals diversify and flourish
Permian-Triassic mass extinction
Present Day
Earliest life on land
Sponges and other multi-celled animals appear
Cretaceous-Tertiary mass extinction
Age of Amphibians
Early hominids appear
One-celled organism appear
Formation of Earth
Mass extinction of mammals at end of last ice age
Early mammals and dinosaurs appear
Cambrian explosion
Supercontinent Pangaea beings to break apart
Age of oldest known rocks
Mammals diversify and flourish
Permian-Triassic mass extinction
Present Day
Earliest life on land
Sponges and other multi-celled animals appear
Cretaceous-Tertiary mass extinction
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