The graph here summarizes the changes in the total

volume of ice in all the world's glaciers since 1960.
Note that the volume changes on the y-axis are
negative, meaning an overall loss of volume.
The greatest volume of glacial ice was lost during
what periods?
(1 point)
Between 1960-1970
Between 1980-1990
Between 1995-2000
Before 1960
Referring to the same graph
The most reasonable explanation for the loss of
glacier mass since 1960 is...
(1 point)
an increase in the total productivity of the world's
oceans
a gradual rise n the Earth's average temperature
an increase in the total amount of ice at Earth's

poles

a decrease in the total amount of precipitation