Yes. That is why some rivers have rapids. Water going over rocks create them.
Because they fall in the water over time
Newts don't specifically hide under rocks but they go under rocks whenever they want too. Rocks are in the water and on land and newts are totally aquatic and specifically aquatic so they can go under rocks when they feel like it.
sedimentary
NO of course not. They are from lava.
volcanos under water exploded and rocks formed it.
yes
Maybe the reference is to an aquifer.
under bodies of water
under depths of water
The Study Of The Surface Or Rocks Or Everything Under Water
The small particles are compressed under water to then form sedimentary rocks
by rocks.