Answer:
When a river enters a lake or an ocean, it slows down, losing its ability to transport sediments, forming a delta
Step-by-step explanation:
The rivers transport sediments from birth to discharge to the sea or lakes. At the mouth you can accumulate many amounts of sediment forming a fan-shaped delta. Some of the deltas, such as the Amazon River Delta, the Grijalva River Delta, the Nile River Delta, etc., should be noted as examples. We can know three types of deltas: the deltas by the action of the rivers, by the action of the waves and by the action of the tides.