The movement of water from the atmosphere to the ground is called which of the following?
a. condensation
b. evaporation
c. precipitation
d. transpiration
*earth science*

The answer is C. Precipitation because we see precipitation as rain or snow or hail - from the atmosphere to the ground basically
Not A because the water already condensed to form clouds
Not B because water evaporates from the ocean or ground
Not D because plants transpire water into the atmosphere, which is a form of evaporation

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.