Answer:
The answer would be the first one
Explanation:
An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to remove.
Due, to know life on the moon there would be nothing to mess with the footprint, but the main reason why these footprints are going to last centuries is because "there is no weather." Since how there is no weather on the moon which means no wind there is no factors that could affect the footprint.
Hope this helps!
It might be 23% because 77% of water covers earth and most of the water is either polluted or salt water.
