Question

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where are some of the oldest rocks on earth found, and how old are they?
○ australia, ~2.5 billion years old
○ south africa, ~4.2 billion years old
○ antarctica, ~1.8 billion years old
○ west greenland, ~3.7 - 3.9 billion years old

Explanation:

This is a factual question about the location and age of some of the oldest rocks on Earth. The answer is based on geological knowledge. West Greenland has rocks that are approximately 3.7 - 3.9 billion years old.

Answer:

West Greenland, ~3.7 - 3.9 billion years old.