Geography · Geomorphology

Consider the following statements regarding river deltas and choose the correct combination from the options below: i. A delta is a fan-shaped or triangular area of fine alluvium deposited at the mouth of a river. ii. Deltas represent the broad tidal mouth of a river where fresh and saline water mix continuously. iii. For the formation of a delta, a shallow sea, a river with a substantial load of sediment, and calm offshore waters are necessary. iv. Large deltas are typically destroyed or prevented from forming on the shores of very high tidal range seas due to strong wave action.