The abiogenesis occurred about how many billion years ago?
A. 1.2 billion
B. 1.5 billion
C. 2.5 billion
D. 3.5 billion
Answer:D
The abiogenesis occurred about how many billion years ago?
A. 1.2 billion B. 1.5 billion C. 2.5 billion D. 3.5 billion