16. (08.05 mc) which of the following changes in modern agriculture challenges the validity of von thünen's theory? (3 points) i. increased consumer demand for organic food ii. decreased transportation time from farm to market iii. global demand for certain crops iv. increased mechanization of agriculture has increased crop yields i and ii i and iii i and iv ii and iii ii and iv

The answer is II and IV. Von Thunen's Theory 's proncipal variable is distance. If the crop field is close to the consumption area (a city), the cost of that land will be expensive. If it is far away, the cost of the land will reduce but the transportaions ones will increase. With the improvement of transportation the distance won't be such a determinant factor, those costs reduce considerably.

With the improvement of crop yields, wich Von THunen did not had in consideration, a single crop can provide a lot of food making the cost of the land reduce its importance.

legislative branch:

one of the three branches of government divided between the senate and the house of representatives.

- creates or makes laws

- power to override a veto

executive branch:

one of the three branches of government, headed by the president.

- enforces or carries out laws

- power to veto a bill sent to it by congress

judicial branch:

one of the three branches of government, headed by the chief justice of the supreme court.

- interprets laws

- power to declare laws or actions by the government unconstitutional

the hollywood film industry of 1950 was threatened on several different fronts. television broadcasting was rapidly becoming the dominant entertainment medium in the united states. the paramount anti-trust consent decree requiring separate ownership for production companies and theater chains had gone into effect on 1 january 1950. large numbers of young men and women were marrying, having children, and moving to the suburbs, which affected the viability of downtown first-run movie theaters. foreign revenues were endangered by protectionist tactics including quota systems, high taxes, and blocked funds. finally, the morality and patriotism of hollywood films and filmmakers were under attack from government, religious, and citizens' groups.

explanation: