<Li> fluctuations in the exchange rate between the two currencies which are not immediately reflected with price adjustments, </Li> <Li> Different product safety standards between the two countries, where the cost for Canadians are spread out over fewer consumers . </Li> <P> Another factor is Canada's Supply Management system for certain food items such as chicken and milk which ensures farmers are paid fairly but results in higher retail prices, </P> <P> When asked about "Country Pricing", members of the Retail Council of Canada were told by manufacturers that there are three main reasons for these discrepancies: 1) Canadians are used to paying more for products in Canada; 2) the higher prices charged to retailers in Canada subsidize the costs of maintaining suppliers offices and operations in Canada; and 3) the higher prices are necessary to compensate Canadian distributors which face higher costs in Canada . </P>

2. what natural resources do canada and the u.s. share