Final answer:
Deltas and rivers are similar as both are involved in the transport and deposition of sediments, with deltas forming from the silt that settles at the river mouths, leading to fertile agricultural lands.
Step-by-step explanation:
Deltas and rivers are similar because d. Both are associated with the transportation of sediment and deposition. Rivers carry water and sediments from the interior regions to coastal areas, which leads to the formation of deltas at river mouths. These deltas are comprised of sand and mud as the silt settles from the slowing river onto the ocean or lake bottom. The rich soils in these deltas support major agricultural areas due to their fertility. Additionally, rivers are responsible for shaping the earth's surface through erosion and deposition, carving out river valleys and creating fertile floodplains.