I might not be right but I think the empirical formula is NO2
The sand provides a rough surface on top of the ice for the cars' tires to grip onto. It provides more friction. Salt melts the ice and often provides more friction (the disadvantage is that it eats concrete!).
Water acts as an acid (donates H+) when it reacts with a stronger base, say sodium hydroxide. Water acts as a base (accepts H+) when it reacts with a stronger acid, say hydrochloric acid. If the medium is water, water, having a pH of 7, is considered neutral.
Spotted Lantern: Destroying our trees
Fishers: Brought to lower numbers of certain species, but have dramatically lowered other species.
Zebra Mussels: Clog pipes
Emerald Ash Borer: Ruins ash trees that provide us with durable wood.