I think it might be erosion because erosion breaks down objects
Sunlit zone is depth of water exposed to sunlight, trenches is a long narrow ditch.
If we keep on using fossil fuels the earth will become hotter and we will have no more left.we will end up using all of our resources.
another theory is that the sun will one day stop and shut down.with out the sun there will be no more humans,solar system,water or plants.and life on earth will stop.<span />
B is the best answer.
I hope this helps! :)
Answer: Machu Picchu is located In the Andes Mountain range in Peru.
