Which two landform regions make up 75% of Canada’s agricultural production?

The Interior Plains and the Great Lakes-St. Lawrence Lowlands are vital to Canada’s agricultural production because they offer the most fertile soil and favorable climatic conditions for farming. The Interior Plains, characterized by flat land and rich soil, support extensive agriculture, particularly in the cultivation of grains and canola. Similarly, the Great Lakes-St. Lawrence Lowlands benefit from a milder climate, ample moisture, and fertile lands, making it an ideal region for growing a diverse range of crops and supporting dairy farming.

These regions collectively account for a significant portion of Canada's agricultural output due to their geographical advantages, which include access to infrastructure for transportation, favorable growing conditions, and a long agricultural history that has fostered development in these areas.