Final answer:
Food production is responsible for up to 30 percent of greenhouse gas emissions, with activities associated with the global food system contributing to these emissions. Using human-edible crops to produce animal products is a significant source of these emissions.
Step-by-step explanation:
According to various sources, including Barnard, Hamilton, and Münter, food production is responsible for up to 30 percent of greenhouse gas emissions. These emissions result from various activities associated with the global food system, such as production, transport, processing, storage, waste disposal, and other life stages. Additionally, the practice of using human-edible crops to produce animal products, such as meat and dairy, accounts for a significant portion of these emissions.