Which one of the following figures represents the age of the earth?
A. 4.6 million years
B. 13.7 billion years
C. 4.6 billion years
D. 13.7 trillion years.
Answer:B
Which one of the following figures represents the age of the earth?
A. 4.6 million years B. 13.7 billion years C. 4.6 billion years D. 13.7 trillion years.