Final answer:
In Food Inc, it is highlighted that chickens and corn have been broadly modified to enhance production and efficiency; chickens are bred to grow faster, and genetically engineered corn dominates the market due to its resilience. Health and environmental impacts of such genetic modifications raise concerns despite the increased agricultural yield they facilitate.
Step-by-step explanation:
In the documentary In Food Inc, it's shown that chickens, corn, and other food products have been significantly modified both conceptually and physically. Chickens have been bred to grow larger and at a faster rate to increase production efficiency. Genetically modified corn has become ubiquitous, largely due to its genetic alterations that make it more resistant to pests and herbicides, which boosts productivity and profitability. This corn is used not only as a direct food product but also as a feed for livestock like the aforementioned chickens, which indirectly modifies their growth and physiology as well.
While genetically modified foods, such as corn, have become commonplace, concerns about their safety for consumption and environmental impact continue. These modified organisms may present unknown health risks due to potential allergenicity or gene transfer, and ecologically, they might outcompete natural species or disrupt ecosystems. Nevertheless, the biotechnology used for creating such products has been crucial in shaping today's agricultural landscape, determining the varieties of foods available and altering traditional cultivation practices.