Agriculture was the key development that led to the emergence of human civilization, with the breeding of domestic animals and plants (i.e. crops) creating food surpluses that enabled the development of more densely populated and stratified societies. The study of agriculture which is known as agricultural science. Agriculture has also been observed in some species of ants and termites. Agriculture encompasses a wide variety of specialties and techniques, including the way to expand the land suitable for the plant of funds, by water digging channels and other forms of irrigation. Crop production in farmland and grazing of livestock on grazing of grasslands remain at the base of agriculture. In the last century there has been a growing concern to identify and quantify the different forms of Agriculture. In the developed world the range usually extends between sustainable agriculture (e.g.

Permaculture or organic agriculture) and intensive farming (e.g. industrial agriculture). modern Agronomy, plant breeding, pesticides and fertilizers, and technological improvements have greatly increased crop yields, but at the same time, have caused great environmental damage and negative effects on human health. Selective breeding and practice modern in the breeding of animals such as the intensive rearing of pigs (and similar practices applied to the chicken) have also increased production of meat, but they have expressed concern about the cruelty of animals and the effects of antibiotics, growth hormones, and other chemicals commonly used in industrial meat production. The main agriculture products can be grouped into foods, fibers, fuels and raw materials.

In the 2000s, plants have been used for the cultivation of biofuels, biopharmaceuticals, bioplastics, and pharmaceuticals. specific foods include cereals, vegetables, fruits and meat. The fibers are cotton, wool, hemp, silk and flax. Raw materials include wood and bamboo. Other useful materials are produced by plants, such as resins. Biofuels are methane from biomass, ethanol, and biodiesel. Cut flowers, nursery plants, tropical fish and birds for the pet trade are some of the ornamental products. In 2007, a third of the world’s workers were employed in agriculture. The services sector has overtaken agriculture as the economic sector with more contracts around the world. Despite the size of its labor force, accounts of agricultural production during less than five percent of gross world product (an aggregate of all products domestic gross). I hope that this information of agriculture and livestock is very helpful.