The pie charts illustrate the results of environmental problems in which people are worried about it in three different countries, namely Zambia, Singapore, and Cameroon,
Overall, as can be seen from the three pie charts, people from Zambia and Singapore are most concerned about overpopulation, followed by global warming, whereas people in Cameroon think that waste disposal is the biggest problem in the environment. In contrast, pollution is the lowest problem in all countries, which also have equal proportion with waste disposal in Zambia.
In terms of Zambia and Singapore, overpopulation is the most problem to the environment, accounting for 43% and 37%, respectively. Global warming is second rank, with almost 25%, 21% of people in Singapore are worried about waste disposal, which is higher than that of Zambia. Pollution is bottom at the chart, making up 14% in Zambia and 16% in Singapore.
According to Comeron, 42% of people are the most concerned about waste disposal, followed by overpopulation, with 23%. Global warming and pollution have nearly the same share, accounting for 19% and 16%, respectively.