Three pie chart illustrates the results of environmental issues in which people concerned about the condition of the three countries.
Overall, the largest proportion of each pie chart was became overpopulation in Zambia as well as Singapore. Furthermore, waste disposal is biggest amount in Cameroon. But also pollution is the lowest in every chart.
It is clear that overpopulation is biggest concerns in Zambia with 43%. It might be approach concerns of global warming. By contrast, pollution and waste disposal have the same percentage of 14% over the period. Meanwhile, overpopulation is the largest in Singapore with 37% than other categories. Pollution is the lowest amount 16% such as global warming belongs around 26%. Waste disposal became proportion of 21%.
However, there are different percentage in Cameroon. It can be seen that waste disposal is significantly peak with 42%. Overpopulation is the next main issues with under the quarter. Global warming is 20% and related to 16% over the period.