Final answer:
The question focuses on landforms created by changes in sea level, such as raised beaches, rias, relic cliffs, and fjords. These features result from geological and climatic influences like tectonic movements and glacial actions. Other landforms, including plains, mountains, and islands, are also shaped by a variety of physical processes.
Step-by-step explanation:
The subject of the question pertains to landforms and the physical processes that lead to their formation, particularly those caused by changes in sea level. Raised beaches, for example, are former shorelines lifted above the current sea level due to tectonic uplift or a drop in sea level. Similarly, rias are drowned river valleys caused by rising sea levels, while relic cliffs are former coastal cliffs that are no longer actively eroded due to changes in sea level.Fjords, on the other hand, are deep, narrow bodies of water formed by glacial erosion and subsequent flooding by sea water. These features are all indicative of the dynamic nature of Earth's surface, influenced by a combination of geological activity and climate change. Landforms not only include these coastal features, but also encompass a variety of other geographical structures such as plains, mountains, and islands, each formed through distinctive physical processes like erosion, sediment deposition, volcanic activity, and tectonic movements.