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4.6 billion years
The age of the rock layers exposed in the Grand Canyon range from 240 million years to 1,800 million years in age. The surface feature known as the Grand Canyon is thought to be less than 17 million years old.
It is 4 billion years
In geologic time, the Hadean is the first EONof Earth's history, from it's formation 4.57 billion years ago to about 4 billion years ago. The Hadean is not an era, which is a smaller subdivision of geologic time.
4.6 billion years
The Precambrian. Hope this helps! :)
4.6 billion years
4.6 billion years
4 bytes are enough to represent any integer in a range of approximately -2 billion, to +2 billion.
about 1.9 billion years ago.
The geologic time scale covers the entire history of Earth, which spans approximately 4.6 billion years. It is divided into eons, eras, periods, epochs, and ages to categorize and study Earth's history.
The age of the rock layers exposed in the Grand Canyon range from 240 million years to 1,800 million years in age. The surface feature known as the Grand Canyon is thought to be less than 17 million years old.
An eon is half a billion years or more.
The Precambrian ... about 3 billion years.
Approximately 1.17 billion.
It is 4 billion years
Approximately : land plants have been around for a half a billion years. The Earth for 4.5 billion years. So your answer is one ninth.