Based on the Age of the Light- and Dark-Colored Regions

question 29

Multiple Choice

Based on the age of the light- and dark-colored regions of the Moon and the number of craters observed in these regions,we know that impacts in the inner Solar System

• A) rapidly decreased approximately 3 billion years ago.
• B) rapidly decreased approximately 1 billion years ago.
• C) were very rare in the last 4.5 billion years.
• D) occurred at approximately a constant rate throughout most of the age of the Solar System.

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