Air pollution in us and canadian cities is caused mostly by a. clear-cutting forests for timber b. releasing emissions from vehicles and industry c. dumping runoff from farms into rivers d. harvesting minerals from mines

Most air pollution in United States and Canadian cities is caused by vehicle and industrial emissions. The correct option among all the options that are given in the question is the fourth option or option "D". This has led to increased amount of global warming. I hope the answer has helped you.

the answer is a the rich and poor get an equal share of the power and wealth

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the image shown is not a reliable source. it is not a photograph taken of the event, and it is not a painting created by someone who witnessed the event. the image can be considered yellow journalism because it is sensational and exaggerated. the explosion did not likely cause bodies to fly in the air or create a large fireball, as shown here. the image was created to make the american public angry about the explosion, not to show what actually happened.

the painting is not reliable.

the painting is exaggerated.

the painting is inaccurate.

the painting was created to make the public angry, not to show what really happened.