The First Agriculture Revolution was the discovery on how to farm. This occurred in 8,000 BCE, and allowed people to store their food, make more reliable food sources, and to create settlements near these food sources. The first agriculture revolution helped farm hearths from resources in Southwest and East Asia (Plants and Animal hearths), Sub-Saharan Africa, and Latin America.
The Second Agriculture Revolution was known to create improvements in quality of farming, through relying more on machines. It's time period was from 1600-1800. The new technologies helped organized seeding, better fertilizers, and improvements in breeding. Pesticides and natural fertilizers were mixed with chemicals to replace human work on farms.
The Third Agriculture Revolution began in the 1940's/1950's. Hybrid seeds and fertilizers were a factor to help create better outputs in crop production. These better outputs were used to help areas of improvement, so it could be used to produce food faster in all areas of the world. In addition, diseases were prevented from pesticides.
GMOs or Genetically Modified Organisms are modified plants and animals that have their gene formation changed. The cons are believed to be from dangers of viruses, bacteria, and insects that are being put into the plant, which is causing worry of unhealthiness and sickness from modified plants. The main pro for GMOs are that it is trying to keep stability of plants from diseases, by having the plant grow its own pesticide, so people won't be able to put down unnatural pesticides to the plant.
Subsistence Agriculture-Agriculture in where people farm to feed for themselves or for people that are in there general area. Sustainable Agriculture-Is when people rely on types of chemicals to improve the quality of farming. Commercial Agriculture-Is when farming is used to produce farms for money, and is usually filled with workers to also make a profit. These three types of agriculture are all used for a different way of how farming can be done, and are different from which outcome is wanted from the farmer(s).
Some fun facts of agriculture are: In 1910 the first kiwi was grown in New Zealand, and today New Zealand produces 1/3 of the world's supply of kiwi. There are 6,000 different known types of apples in the world, and the biggest producer of apples are China. There are 2.2 million farms in the U.S. The U.S, Brazil, Argentina, India, and Canada combined produce 152 million of the 170 million groups of GMOs.