Final answer:
Concentrated Animal Feeding Operations (CAFOs) are large animal farms that can pollute waterbodies and pose environmental and ethical concerns. They use antimicrobial drugs extensively, affecting the nutritional value of animal protein and contributing to drug resistance.
Step-by-step explanation:
Concentrated Animal Feeding Operations (CAFOs) are large animal farms that are considered potential sources of pollution due to the untreated animal waste that can contaminate waterbodies. The rise of CAFOs since the 1950s has led to environmental issues like water and air contamination, as well as ethical concerns about animal rights. These operations often use antimicrobial drugs extensively, which can contribute to drug resistance.
CAFOs have also had an impact on the nutritional value of animal protein, decreasing its content in omega-3 fatty acids and increasing saturated fat levels. The use of antimicrobial drugs in CAFOs has raised concerns about the development of drug-resistant bacterial strains, which can pose risks to human health.