Final answer:
Abrasion is an especially important physical weathering process in arid environments.
Step-by-step explanation:
Physical weathering processes in arid environments are especially important for shaping the Earth's surface. One such process is called abrasion. Abrasion occurs when wind-blown sand or dust particles collide with rocks and other surfaces, causing them to wear away gradually. This process is common in deserts, where strong winds and limited vegetation expose rocks to constant abrasion. As a result, desert landscapes often feature unique landforms such as sand dunes and rock pedestals.