"Circular economy" is essentially an ecological economy, which requires the use of ecological laws instead of mechanical laws to guide the economic activities of human society, which is characterized by low mining, low emissions and high utilization. Which of the following are not part of the circular economy approach:. ['Changing the single-program economy into a circular economy.', 'Changing the consumption-based economy into a rest-oriented economy.', 'Changing the reserve economy into a growth economy.', 'Returning farmland to lake and farmland to forest.']