Question

the sand, pebbles, and cobbles that a streams water can roll or push along the bed of the stream is called its

Explanation:

In geology, the term for the sand, pebbles, and cobbles that a stream's water can roll or push along the stream bed is a well - defined concept. Stream transportation of sediment has different modes. The bed load specifically refers to the coarser sediment (such as sand, pebbles, cobbles) that moves by rolling, sliding, or saltating (bouncing) along the stream bed.

Answer:

bed load