Final answer:
Monsoons are similar to seasonal winds but are specifically driven by the differential heating of land and ocean, bringing crucial rainfall in South Asia during summer.
Step-by-step explanation:
Monsoons are the same processes as seasonal winds but caused by differential heating of land and ocean. Monsoons are particularly important in South Asia, where they provide vital rain for agriculture and fill rivers and streams. During the summer, the significant warming of the landmass compared to the ocean leads to a vacuum that pulls in moist air from the surrounding seas, resulting in substantial rainfall. In winter, the process reverses, bringing drier air and less precipitation to the region.