C. formal regions are known as "formal" because of the characteristics known by the people who live there and/or visit there
Deposition has to do with deltas because when deposition such as water wind or ice moves the sediments and deposits them at the end of a river lake or ocean a delta is formed
Changes from building houses to withstand either tsunamis or hurricanes. From changes to the local economy and how the food grows and what needs to be strengthen to adapt to the noticeable weather change. Also from the changes of local and current laws and or codes of laws.
There's a calculator in this planet earth just use that. It's easy
Answer:
So much salt will be left that is even enough to form a layer about 500 feet thick that covers all of Earth.