12 10 8 Frequency 6 4 2 0 0 20 20 40 60 60 Exam scores 50 80 100 Per capita supply of vegetable protein High Low 0 10 20 30 40 50 60 70 CVD mortality rate as a percentage of total deaths (155 countries) A B A B D 1 1 1 0 6 12 18 24 30 36 42 48 Daily Tobacco Smoking as a Percentage of Population (123 countries) 30- 20- 10- 12 26 27 31 19 6 1 I 1 I I 0 6 12 18 24 30 36 42 48 Daily tobacco smoking as % of population (123 countries)