Export primary commodity concentration ratios are ?

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Export primary commodity concentration ratios are ?

A. commodity exports as a percentage of GDP per capita of exporting country divided by importing country
B. export earnings as a ratio of population
C. total merchandise export divided by Gross National Income
D. food, raw materials minerals and organic oils and fat as a percentage of total merchandise exports

Which of the following best describes the rate of growth in productivity in the United states over the last fifty years ?

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Which of the following best describes the rate of growth in productivity in the United states over the last fifty years ?

A. Productivity growth has been steady over the last 50 years
B. Productivity has been growing more slowly every decade since world War II
C. Productivity grew quickly in the 1950s and 1960s more slowly from the early 1970s through 1995 and then quickly again
D. Productivity grew slowly from the 1950s through the 1970s and then began to accelerate probably due to advances in computer technology

Which of the following statements regarding the impact of population growth on productivity is true ?

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Which of the following statements regarding the impact of population growth on productivity is true ?

A. There is no evidence, yet that rapid population growth stretches natural resources to the point that it limits growth in productivity
B. All of these answers
C. Rapid population growth may dilute the capital stock lowering productivity
D. Rapid population growth may promote technological progress increasing productivity.

If a production function exhibits constant returns to scale ?

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If a production function exhibits constant returns to scale ?

A. doubling all of the inputs more than doubles output due to the catch-up effect
B. doubling all of the inputs has absolutely no impact on output because output is constant
C. doubling all of the inputs less than doubles output due to diminishing returns
D. doubling all of the input’s doubles output