Agriculture means cultivation of animals, plants and other products used to sustain life. Agricultural science is the study of Agriculture. The history of agriculture defined by greatly different climates, cultures, and technologies. Some of the major agriculture products we can grouped into foods, fibers, fuels, and raw materials. Some exaple of agriculture products are cereals, vegetables, fruits, meat, cotton, wool, hemp, silk, flax, lumber and bamboo, methane from biomass, ethanol, and biodiesel.