In a new study published in the Proceedings of the National Academy of Sciences (PNAS), research by a group of international experts suggests that global sea levels could rise significantly more than previously predicted. Using a method of analysis called structured expert judgment, the researchers found that under business as usual, sea levels may rise as much as two meters by the year 2100twice the level suggested in the fifth assessment report from the Intergovernmental Panel on Climate Change (IPCC) from 2013. Please choose all of the following consequences to a rise in sea level. Question 2Select one or more: a. Saltwater contamination of drinking water supplies b. More dangerous storm surges c. Increased beach erosion d. Ocean acidification e. Increased flooding from hurricanes