We can see thousands of craters on the Moon and only 180 on Earth. Which of the following processes help Earth keep its surface crater free?
1. Erosion
2. Plate Tectonics
3. Volcanism
Select the correct answer using the code given below.
1
1 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3