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In the Arctic tundra, many types producers, including flowering plants, low shrubs, sedges, grasses, mosses and algae, use the sunâs energy during the process of photosynthesis. Producers are then eaten by plant-eating primary consumers â- herbivores -- such as voles, caribou, arctic hares, musk oxen and squirrels. Some consumers are omnivores, which get their food from both plant and animal sources. These include grizzly bears, polar bears and ground squirrels.
Worldwide cultivation of GM crops in 2007: 1  North America: 2  The US is still the biggest producer of GM crops (58m hectares of GM soya, corn, cotton, canola, squash, papaya, alfalfa). 3  Canada has 7m hectares of GM cotton, corn and soya.