Commodities’ prices move as supply and demand shift. When supply increases and demand remains the same, the price will decrease because too much of a commodity is available. This means suppliers will have to compete on price in order to sell. On the other hand, when demand increases and supply remains the same, prices will increase. Increased demand for that commodity means more scarcity, forcing buyers to compete with one another by paying more.  Commodity prices in Canada track worldwide prices. Poor wheat harvests in Europe and India are likely to drive world demand for North American wheat. In turn, this affects the commodities market, increasing the price of flour for a baker and the price of a consumer’s loaf of bread in Vancouver.  Investors can bet on price changes by investing in company shares, options, futures and commodity ETFs in Canada.