Answer:
Erosion
Explanation:
Building a house on a cliff is a very trick thing. The cliffs usually are not composed of hard rocks, but instead are usually composed of sedimentary rocks which are much softer and less stable on the long run. The cliffs are also exposed to heavy erosion, in the lower parts because of the waves, in the higher parts because of the winds. The erosion makes the cliffs slowly fall apart, and occasionally even crumble down, so a builder that would build a house on a cliff should be wary of all these things and construct the house where it is the safest for the long run.
Selective breeding is when you breed two animals to get a certain characteristic (naturally I guess), GMO is somethings genetic material that gets altered using genetic engineering techniques. Hope this helps lol
C sounds the best answer to find the exact location
