How are the basic'économic questions decided in a market economy? A They are decided based on custom and habit.

B They are decided based on the needs of the public.

C They are decided based on w priorities.

D They are decided based on consumer preferences.

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.

Many citizens are in danger of contracting a food-borne illness.more people are living with chronic illnesses.pathogens are becoming stronger and harder to defeat.