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.
Confidence votes 267. The two zones of groundwater are the saturated zone and unsaturated zone. The saturated zone is filled with water and is below the unsaturated zone. The unsaturated zone has water and air in its pores (tiny open spaces in the soil).onfidence votes 267. The two zones of groundwater are the saturated zone and unsaturated zone. The saturated zone is filled with water and is below the unsaturated zone. The unsaturated zone has water and air in its pores (tiny open spaces in the soil).