The first revolution (Neolithic rev):
This revolution occurred in 10,000 BC to 20,000 BC. Humans hunted and gathered crops. Later this changed the way humans lived because they began cultivating crops and domesticating animals. They discovered farming was safer than hunting.
The first crop cultivated was Wheat.
Second revolution: Industrial revolution
The second industrial revolution occurred somewhere between 1870-1914. Changes in crops such as feeding artificial feeds to livestock, new fertilizers and technological advancements were made. Invention of the plow, horse collar, and seed drill caused improved efficiency.
New advancements in farming have been made and farmers have began using industrial machinery
Third revolution (Green rev):
The third revolution started around the early 1930s-late 1960s and is still occurring today. There was a large increase in crop production in developing countries achieved by the use of fertilizers, pesticides, and high-yield varieties. Reduced number of laborers, increased land, pollution and reliance on petroleum, increase in grain pollution with the goal to end world hunger.
Genetically modified organisms
An organism whose genome has been altered by the techniques of genetic engineering so that its DNA contains one or more genes not normally found there. GMOs changed farming because now the crops can withstand climate change, weeds and pesticides, and can fight disease. Pros: farmers have more safe crops. Cons: GMOs may cause allergies, antibiotic resistance, and may be linked to cancer.
All agricultural revolutions described