Some of the main causes of pollution include industrial emissions, poor disposal of wastes, mining, deforestation, use of fossil fuels and agricultural activities. Pollution can affect the air, the land and water bodies throughout the world.
Most of Ontario Canada is in the Eastern Time Zone. The areas of Ontario, west of 90 west longitude, are in the Central Time zone.
Michigan is in the Eastern time zone with the exception of the 4 counties in the upper peninsula that border Wisconsin. Those counties in Michigan are in Central time so there is only a 3 hour difference to most of Alaska and 4 hour difference to the western Aleutian Islands.