What is the age of the oldest rocks discovered on the planet?
A. 6,000 years old
B. 4.6 million years old
C. 4 billion years old
D. 4.6 billion years old
Answer:C
What is the age of the oldest rocks discovered on the planet?
A. 6,000 years old B. 4.6 million years old C. 4 billion years old D. 4.6 billion years old