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.
When physical agents cause the rocks to break into smaller pieces or fragments, it is called mechanical weathering. There are different causes of mechanical weathering that includes plants and animal activity (biological), fracturing and abrasion.echanical weathering involves physical activities leading to break down of rocks and chemical weathering involves natural chemical reactions leading to decomposition of the rocks.