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.
Currently Eastern Standard Time (EST), UTC -5 Daylight saving time (Eastern Daylight Time (EDT), UTC -4) starts March 11, 2018 The IANA time zone identifier for Toronto is America/Toronto. Read about Toronto in Wikipedia