The following pie-chart shows the percentage of several risk factors that cause lung cancer. 1) Using the adjacent data, show that social hazards contribute to the highest incidence of lung cancer among population. 2) Estimate the percentage of lung cancer due to tobacco smoke. 3) State one chemical hazard shown in the pie-chart. 2 Tobacco smoke 4% 2% Occupational Outdoor pollution Unintentional tobacco smoke exposure 27% Radon 26%

The following pie-chart shows the percentage of several risk factors that cause lung cancer. 1) Using the adjacent data, show that social hazards contribute to the highest incidence of lung cancer among population. 2) Estimate the percentage of lung cancer due to tobacco smoke. 3) State one chemical hazard shown in the pie-chart. 2 Tobacco smoke 4% 2% Occupational Outdoor pollution Unintentional tobacco smoke exposure 27% Radon 26%