riverbed
Rivers are commonly found in sandy areas, mud and stony bottoms.
Pebbles are most often found near rivers and lakes. These stones are usually tumbled in fresh water until their edges are smooth.
A beach made of pebbles is often called a "shingle" beach.
silt
They are called pebbles.
pebbles.
Conglomerate rocks are sedimentary rocks; they settle at bottoms of the rivers, lakes, and oceans in deposited layers.
They are called pebbles...
Conglomerate
Pebbles and BAM BAM.
it's called conglomerate
The bottoms of pants are called "Cuffs".