2.5%

55 times

90%

97.5%

a resources that runs out

a resource that requires renewing periodically

a resources that will not run out

a limited resource

water that flows over land and has not been absorbed into the ground

water that moves downhill accoring to gravity

water found on the crust of the earth's surface

all of the land area that supplies water to a particular river system

water that flows over land and has not been absorbed into the ground

water that moves downhill according to gravity, forming a network of connected streams and rivers

water found on the crust of the earth's surface

all of the land area that supplies water to a particular river system

water that flows over land and has not been absorbed into the ground

water that moves downhill according to gravity, forming a network of connected streams and rivers

water found on the crust of the earth's surface

all of the land area that supplies water to a particular river system

water that flows over land and has not been absorbed into the ground

water that moves downhill according to gravity, forming a network of connceted streams and rivers

water found on the crust of the earth's surface

all of the land area that supplies water to a particular river system

water that flows over land and has not been absorbed into the ground

water that moves downhill according to gravity, forming a network of connceted streams and rivers

water found on the crust of the earth's surface

all of the land area that supplies water to a particular river system

sponge-like formations of rock, sand, or gravel that hold water.

layers containing spaces, or pores, through which water can pass

water found on the crust of the earth's surface

layers with few or no pores

sponge-like formations of rock, sand, or gravel that hold water.

layers containing spaces, or pores, through which water can pass

water found on the crust of the earth's surface

layers with few or no pores

sponge-like formations of rock, sand, or gravel that hold water.

layers containing spaces, or pores, through which water can pass

water found on the crust of the earth's surface

layers with few or no pores