2. In wintry conditions, highway safety is improved by treating road surfaces with substances that will provide traction and/or melt snow and ice. Sand and rock salt are two widely used

sub- stances. Recently, a combination of beet juice and rock salt is being used in some parts of the country to treat road surfaces. Suppose you have been asked to provide a list of factors to con- sider for a switch from rock salt alone to using a combination of beet juice and rock salt. Name the major considerations you would take into account in making a decision in the following cat- egories: cost considerations, environmental considerations, both positive and negative, and other considerations.