North America metropolitan area by population in North America: Greater Mexico City. Canada also breaks into the top ten largest metropolitan areas with the Toronto metropolitan area having six million people. The proximity of cities to each other on the Canada–United States border and Mexico–United States border has led to the rise of international metropolitan areas. These urban agglomerations are observed at their largest and most productive in Detroit–Windsor and San Diego–Tijuana and experience large commercial, economic, and cultural activity. The metropolitan areas are responsible for millions of dollars of trade dependent on international freight. In Detroit-Windsor the Border Transportation Partnership study
Genetically modified food in North America Genetically modified food in North America Genetic engineering in North America is any genetic engineering activities in North America Mainland Canada is one of the world's largest producers of GM canola and also grows GM maize, soybean and sugarbeet. Health Canada, under the Food and Drugs Act, and the Canadian Food Inspection Agency are responsible for evaluating the safety and nutritional value of genetically modified foods. Environmental assessments of biotechnology-derived plants are carried out by the CFIA's Plant Biosafety Office (PBO). The Canadian regulatory system is based on whether a product has novel features regardless of method of origin. In