The Rocky Mountains were formed 55 million years ago. They formed when California, Oregon, and Washington pushed up.
The continents move to there current position 30 million years ago. The Atlantic ocean began to expand in a result of sea-floor spreading.
The Ice age happened 10,000 years ago. It was in the Quatinary period. An ice age is when ice sheets cover the continents. The Cenozoic era is known for the Age of Mammals.
The continents move to there current position 30 million years ago. The Atlantic ocean began to expand in a result of sea-floor spreading.
The Ice age happened 10,000 years ago. It was in the Quatinary period. An ice age is when ice sheets cover the continents. The Cenozoic era is known for the Age of Mammals.