A: Styrofoam does not decompose in the environment under normal circumstances. Much like plastic, Styrofoam is made from a polystyrene-based petroleum product that is not biodegradable. Plastic takes hundreds of years to decompose, and Styrofoam takes much longer because it is a stronger form of plastic.
View Full Document. Zone of wastage: Is the area in which melting or ablation rates exceed those of snowfall (Fig.2). â¢ The snow line: Is the boundary between the zone of accumulation and that of wastage, and could therefore be defined as the highest level at which winter snow melts in the summer. VI- Internal structure of a glacier.
The main or core population of the asteroid belt is sometimes divided into three zones, based on the most prominent Kirkwood gaps: 1  Zone I lies between the 4:1 resonance (2.06 AU) and 3:1 resonance (2.5 AU) Kirkwood gaps. 2  Zone II continues from the end of Zone I out to the 5:2 resonance gap (2.82 AU).