Food and Agriculture In the United States we are fortunate to have an abundant supply of food, and much of this is due to our agricultural technology. However, there are many concerns about our food source including genetically modified crops, the use of more chemicals, and climate change just name a few. In this forum: Give examples of how humans have increased their food supply and what effects these methods have on the environment overall. Discuss concerns you have about the overall safety of the food you eat?