2.79 Environmental Factors How do Canadians rate environmental factors in terms of the threat they pose to Canada? Below are findings of the survey conducted by the Strategic Counsel.22 The large majority of Canadians (61%) believe that toxic chemicals are linked to human health. 55% think air pollution and smog is an important factor. On the other hand, 52% feel that global warming and climate change is a key factor in terms of threat to Canada. Identify the variable of interest, and any percentiles you can determine from this information.