Erosion
Water can create caves.
I don't really know what you define as an underwater cave. Some caves have been drowned by rising sea-level, having formed on land at times of lower sea-levels (i.e. during the Ice Age glacials). Others are entirely terrestrial but full in whole or in part with water. Nevertheless, the answer is that normally caves carry water from limestone uplands to their outlet (risings or springs) at lower altitude, so their effect is to replace open streams on the surface with underground ones.Other than that or the occasional collapse of a cave roof to create a doline on the ground above, they don't affect the land surface.
30%
it is the water cycle
It can change
Water can create caves.
it is water cycle
70% or 80% of water covers the earths surface
soften the surface and create earthquakes. another version of the grand canyon
3/4 of the earth's surface is water.
Indian Ocean covers 20% of water on the earths surface.
69%
about 30%
the sun
Water.
I don't really know what you define as an underwater cave. Some caves have been drowned by rising sea-level, having formed on land at times of lower sea-levels (i.e. during the Ice Age glacials). Others are entirely terrestrial but full in whole or in part with water. Nevertheless, the answer is that normally caves carry water from limestone uplands to their outlet (risings or springs) at lower altitude, so their effect is to replace open streams on the surface with underground ones.Other than that or the occasional collapse of a cave roof to create a doline on the ground above, they don't affect the land surface.
the water cycle