Explain How the water caused the delta to form

Deltas are wetlands that form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river. ... A river moves more slowly as it nears its mouth, or end. This causes sediment, solid material carried downstream by currents, to fall to the river bottom

where are the statements?

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement