Ground water.
water cycle
Runoff is the water flowing downhill across the surface of the Earth.
it is water cycle
Runoff
is called 'clouds'.
Help me
70% or 80% of water covers the earths surface
the water that lays under the ground is called ground water.
Water which moves over the earths surface after having precipitated (rain, snow, etc) is known as runoff. Most rivers get the majority of their water from precipitation runoff.
aeration zone
the water cycle.
runoff