How do rivers and streams transport matter?

Rivers transport particles, from fine ones such as silt in turbid water to coarser ones such as sand, gravel, and boulders associated with bed-load transport. The speed and turbulence of currents enable transportation of these materials. When riverbed gradient or the river flow diminishes, particles tend to drop out.

Explanation:

answer; native americans who sometimes actively impeded railroad construction; physical obstacles like rivers and canyons, and

the correct answer would be true friction causes the faults to slip or collide