Question

the method of transport for all particles small enough to be held up by the turbulence of a streams moving water is called
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Explanation:

In hydrology and geology, when particles are small enough to be suspended in a stream's moving water due to turbulence, this is a well - known concept. The key here is the description of particles being "held up" by turbulence. Suspension is a common term in the study of sediment transport in streams. Sediment transport has different mechanisms such as bed load (larger particles rolling or sliding along the stream bed), dissolved load (very small particles in true solution), and suspension. Since the question emphasizes particles being held up by turbulence (which is characteristic of the suspension process as the turbulent eddies in the water keep the small particles from settling out quickly).

Answer:

suspension