I am also originally from Ontario.
Going uphill leads to an eventual downhill. This last statement is not meant metaphorically as a view on keeping a positive outlook on life but as a factual statement about geographical typography.
The Vice squad is forced to rely on a petty criminal (Charlie Barnett) to help them bust a gang of violent Jamaican thugs that are responsible for a series of deadly drug ripoffs around the city.
In most forest ecosystems, sulfate is derived mostly from the atmosphere; weathering of ore minerals and evaporites contribute some sulfur. Sulfur with a distinctive isotopic composition has been used to identify pollution sources.