The graph shows the petroleum reserves that remain in five regions of europe. arrange the regions by decreasing amount of petroleum reserves.
petroleum reserves in europe
1,20,000-
1,00,000
remaining petroleum reserves
80,000
petroleum reserves
(millions of barrels of oil equivalent)
60,000
40,000
20,000
4,017 4,025 4,035 4,036 4,047
region a
region b
region d
region e
regions
a
.