2.08 Quiz Evolution And Earth History

Question: Scientist think that all of life on earth originated from which type of organism?

Answer: Single-cell prokaryotes

Question: According to the scientific view, how many years ago did life on earth begin?

Answer: 3.5 billion years ago

Question: What can radiometric dating tell you?

Answer: the absolute age of a fossil

Donation Page

Support Our Work

Do you appreciate the value this website provides? If so, please consider donating to help keep it running. Your donation will go a long way in helping us continue to provide the same quality of content and services. Every bit helps, and your support is greatly appreciated. Thank you for your generosity.