TRY IT Explain the Yea
1974
1980
1984
Again, look at the table. Examine the saturated
thickness levels between 1975 and 1990 and
between 1995 and 2010. Each of these are fifteen-
year spans, but the decrease in saturated
thickness is not the same. Even if the population
were to stay the same Iver this time, why do you
think the drop in thickness is not as great?
1990
1994
200K
2004
2010