Still others have tried to split the difference by arguing for a permanent noncitizen legal-resident status for illegal immigrants and their offspring, on the German and French model.
To assess the contribution from melting ice sheets, scientists try to measure "mass balance, " which is the difference between the annual snow that falls on the permanent ice sheets each year, and the total mass of ice that melts or breaks off the sheets.
The obvious difference is that only real plagues kill real people, though the permanent loss of a character can be a traumatic experience for an enthusiastic player, and one he will try hard to avoid.