Since the average depth of the ocean is about 4000m, or 4 km, then Residence Time = [depth of water (m)] / [depth of evaporated water (m/yr)] = 4000 m / 1 m/yr = 4000 yrs residence time The residence time of water in other "reservoirs" on the earth's surface is shown in Table 6-3.
(the average depth of the ocean; is; about 4000m, or 4 km) (4000 m / 1 m/yr = 4000 yrs; is shown; L:in Table 6-3; T:then; T:Residence Time)
the average depth of the ocean 4000 m / 1 m/yr = 4000 yrs
is is shown
about 4000m, or 4 km
L:in Table 6-3 T:then T:Residence Time