Why is burning coal a major source of

Burning of coal is a major source of pollution because it releases a lot of excess CO2 into the air.

I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

it's all four options.