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.
Mechanical weathering is when rocks are broken down by physical agents like ice, wind, or water, and chemical weathering is when rocks are broken down by chemical reactions. Jonah asked, 'So let me get this straight: I understand that other things in nature can break down rocks, but how do chemicals cause rocks to break down, too?'