1st agricultural revolution

The first agricultural revolution was the transformation of human societies from hunting and gathering to farming. This transition occurred worldwide between 10,000 BC and 2000 BC, with the earliest known developments taking place in the Middle East. Instead of hunting and gathering food, humans now were growing there own food.

2nd agricultural revolution

The second agricultural revolution is generally said to have occurred along with the Industrial Revolution. It came about in part because of the Industrial Revolution and it helped allow the Industrial Revolution to happen. The second agricultural revolution was based on a greater use of technology. Humans were now using tractors and other equipment to help get the job done instead of by hand.

3rd agricultural revolution

The Third Agricultural Revolution (also called the Green Revolution): The Green Revolution was a period in time when new agricultural practices were created to help farmers all over the world. It was an international effort that was planned to eliminate hunger by improving crop performances. This is the time that tractors started being used to make food faster and more efficient.

GMO

Genetically modified organisms (GMOs) can be defined as organisms (i.e. plants, animals or microorganisms) in which the genetic material (DNA) has been altered in a way that does not occur naturally by mating and/or natural recombination. They change farming because they change the DNA of crops and animals. Pros of GMOs include: resistance to insects, tolerance to herbicides, tolerance for heat, cold, or drought, and crop yield. Cons include: allergies, cancer, and other health problems.