1 Air-Altitude, Density and Specific Volume-The density and the specific volume of air varies with elevation above sea level.  Tag Search.
What is the natural process that causes rocks to break down? Weathering from mechanical and chemical means is the process that causes rocks to become smaller and smaller; wind, rain, the sun, the freeze/thaw cycle, moving glaciers, chem â¦ ical reactions, and gravity are some of the causes of weathering.
[Insert a link to an animation showing how glaciers cause erosion by plucking and erosion.] 1  Plucking is the process by which rocks and other sediments are picked up by a glacier. 2  Abrasion is the process in which a glacier scrapes underlying rock.