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.
Report Abuse. mechanical or physical weathering is caused by agents of when natural processes which break down rocks or materials into sediments, or small rocks. Mechanical weathering usually only changes the shape and size of a rock. Chemical weathering is caused by changes in a rock's chemical composition.For example, in a limestone cave, when Hydrocloric acid or acid rain comes in contact with the stalagmites and stalacatites, it will break them down.Rusting is another example of chemical weathering. The process is called Oxidation.hemical weathering is caused by changes in a rock's chemical composition. For example, in a limestone cave, when Hydrocloric acid or acid rain comes in contact with the stalagmites and stalacatites, it will break them down. Rusting is another example of chemical weathering. The process is called Oxidation.