Final answer:
The Province of Ontario was pressured to phase out coal-fired power plants mainly due to the health impacts of air pollution, which includes a contribution to smog, respiratory issues, and a high carbon footprint. Economic and environmental considerations also play a role, as do the rising viability and promotion of renewable energy sources as sustainable alternatives.
Step-by-step explanation:
The Province of Ontario faced significant pressure to phase out coal-fired power plants primarily due to the health impacts of air pollution. Coal combustion releases harmful pollutants such as sulfur dioxide, nitrogen oxide, and mercury which contribute to acid rain, smog, and various health issues, including respiratory ailments. In addition, burning coal produces a high amount of carbon dioxide, which is a major greenhouse gas contributing to climate change. The environmental and health costs associated with coal usage outweigh its economic benefits, considering that these costs are not reflected in the market price of coal. Moreover, recognizing the role of renewable energy sources like solar and wind as viable alternatives that are becoming more cost-effective, there has been a greater drive towards promoting these cleaner sources of energy in Ontario.
As the global population grows and developing countries expand their industrial bases, the demand for natural resources increases, putting additional strain on the environment. This situation calls for urgent improvements in technology, conservation of resources, and policies to control population growth to reduce the ecological impact. In this context, phasing out coal-fired power plants is not only a health imperative but also part of a broader strategy to achieve a sustainable future.