The first agricultural revolution was when people went from hunting game to farming, it started around 11,000 BC. During this period, people began settling and began cultivating the land, planting crops, and raising animals. This way more people survived because, if you were slow ,or just couldn't catch game, you could farm and still get food. Wheat was one of the first crops grown by humans.
The second agricultural revolution was the invention of new machinery and cutting down on the number of needed farmers. This revolution happened around the same time as the Industrial revolution, which were the 1700 - 1800's. Changes in farming include improved methods of soil preparation, fertilization, crop care, and harvesting improved. Other changes in farming were the new machines which include the crop rotation, dutch plow, seed drill, threshing machines, tractors, and fertilizers.
The third agricultural revolution was the change in more advanced technology, used for farming and to increase farming yields. Also there was more intensive medication; biotechnology and replacing animal and human labor in the ninteenth century.
4. GMO's are genetically modified organism's. They have changed farming because scientist have modified them to withstand natural things like droughts, pesticides ect. Pros of GMO's are, resistance to insects, tolerance to herbicides, tolerance for heat, cold, or drought, crop yield. Cons of GMO's are that some people are concerned that GMO foods may be linked to allergies, antibiotic resistance, or cancer.
5. The difference between sustainable, subsistence, and commercial farming, is that sustainable farming is using environment friendly farming techniques. Subsistence is farming for the good of your family. And finally commercial farming is farming food to sell.
6. Fun facts on agriculture, 1 There are around 2.2 million farms in the United States, 2 Farm and ranch families comprise just 2% of the U.S. population, 3 Farming employs more than 24 million American workers (17% of the total workforce), 4 Bees contribute to more than $15 billion worth of crops every year through pollination.