Sample introductions:
1) Two pie charts compare the percentage of people in three age groups in two particular country in the years 2000 and 2050.
2) Two pie graphs illustrate the proportion of people from three distinctive age groups in Yemen and Italy in the years 2000 and 2050.
1) Two pie charts compare the percentage of people in three age groups in two particular country in the years 2000 and 2050.
2) Two pie graphs illustrate the proportion of people from three distinctive age groups in Yemen and Italy in the years 2000 and 2050.