Prehuman and Geological time Flashcards
1
Q
Cuando se formó la tierra?
A
4.6 billion years ago (4.600.000.000)
2
Q
What was the earth made of?
A
Cosmic dust and gas
3
Q
How many years in an Eon?
A
one billion years (1.000.000.000) although when we refer to geological time in history Each eon has different durations depending on the characteristics of each Eon
4
Q
A
