Environmental Science 14th Edition by Tyler Miller ,Scott Spoolman

تمرين 6

What is the key concept for this section What three systems supply most of the world's food Define irrigation. Distinguish among industrialized agriculture (high-input agriculture), plantation agriculture, traditional subsistence agriculture, traditional intensive agriculture, and polyculture. How does industrialized agriculture violate the three principles of sustainability Define soil and describe its formation and the major layers in mature soils. Why is topsoil one of our most important resources What is a green revolution Describe industrialized food production in the United States.