The Hydrologic Cycle Model

Multiple Choice

The hydrologic cycle model.Water travels endlessly through the hydrosphere,atmosphere,lithosphere,and biosphere.The triangles show global average values as percentages.Note that all evaporation (86% + 14% = 100%) equals all precipitation (78% + 22% = 100%) and that advection in the atmosphere is balanced by surface runoff,streamflow,and groundwater flow when all of Earth is considered.

Evapotranspiration from the Earth's land surface represents ___percent of water entering the atmosphere.

A) 44
B) 86
C) 14
D) 78
E) 20