A common problem for Canada and the neighboring United States is acid rain. Air pollution in the United States leads to the formation of acid rain that spreads to Canada. Falling out, they damage the lakes, forests. The environmental situation of both countries suffers from production emissions (burning fossil fuels in the USA, from coal heating, metal smelting in Canada). Particularly affected by this agricultural and afforestation.
The country’s water resources are polluted in different ways: in the USA, mainly, by pesticide and mineral fertilizers, and in Canada, by the results of forestry and mining operations.
An individual problem in the United States (in the west of the country) is the limited supply of fresh water, so economical spending is required. Also in the US there is the problem of desertification.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.