. Say that in 1964 a country had a labor force participation rate of 60% and by 2014 it fell to 50%. Also, assume that over this time labor productivity grew by 2% a year. How much did income per person change? (8 points) 2. In the Gapminder World tool, please start with the standard variables on the horizontal and vertical axes and do not choose any countries. We will be analyzing all countries and by default, all countries are automatically selected when the tool starts. Change the vertical axis to "Health > Nutrition > Food Supplies (kilocalories / person & day)." First, please describe what you see for the latest year. Second, of the variables on the axes, can one say which causes which? (8 points)