C. the downhill flow of soil and rock resulting from gravity.
here is why... B and D don't make any sense and are not relevant to the question and A really doesnt go along with the question either.
Answer:
Look at explination
Explanation:
Likely because Japan Japan is a large importer and exporter. If ships are not able to come in and out of the harbors due to an earthquake, it would affect other importers.
I'm not 100% sure, but this is what I'd guess.
Answer:
Aquifers are being depleted and wells are going dry
Explanation:
we're taking to much water before it can replenish. Hope this helps