Natural Forces:

* Wind: Wind can carry fine sediments like sand, silt, and dust, especially in deserts and coastal areas.

* Water: Rivers, streams, waves, and ocean currents can transport sediments of varying sizes, from small grains to boulders.

* Ice: Glaciers can move massive amounts of sediment, grinding it up and carrying it long distances.

* Gravity: Gravity plays a role in landslides and rockfalls, moving sediments downslope.

Human Activities:

* Construction: Construction activities can disturb the ground and release sediments into waterways.

* Agriculture: Agricultural practices like tilling can loosen soil and lead to erosion.

* Mining: Mining operations can expose large quantities of sediments to erosion.

* Transportation: Vehicles can kick up dust and debris, contributing to sediment transport.

The specific agent that picks up sediments depends on the size and type of sediment, the location, and the prevailing weather conditions.