Beginnings of Life Flashcards
1
Q
What is the Hadean Eon?
A
A time period from about 4,500 to 4,000 million years ago.
2
Q
What is the Late Heavy Bombardment?
A
A time period where the Asteroid Belt started hitting various other planets.
3
Q
When did life first form?
A
Approximately 3.8 to 4 billion years ago.
4
Q
What are Prokaryotes and Eukaryotes?
A
Very basic life forms. Prokarytoes have no nucleus but Eukaryotes do.
5
Q
Where did all life on Earth start?
A
In the Ocean.
6
Q
Why was all life in the Ocean for a very long time?
A
Mainly because there was no Ozone Layer.
