BILLION-YEAR PERIODS Crossword Clue
BILLION-YEAR PERIODS Crossword Clue
We know 1 solutions for: BILLION-YEAR PERIODS
Crossword Puzzle Infos
Eons are the longest units of geological time, lasting for billions of years. They are divided into eras, which are further divided into periods, epochs, and ages. EONS are typically used to describe the history of the Earth and other planets.