What are the four primary elements found in coal? 90% carbon, 3% oxygen, 4% hydrogen, and 1% sulfur. What forms of air pollution do these elements become as part of coal combustion? When coal is burned for fuel, it combines with oxygen in air to form several air pollutions. What substances are contained within coal ash?
It is an oil painting on canvas.   It is to show Picasso's anger at the bombing of the little Spanish town Guernica in 1937.  .
A story, quite possibly apocryphal, circulates about Guernica. During World War II, a German officer sees a copy of the painting for the first time, in the presence of Picasso. In a wondering tone he asks Picasso Did you do this? and Picasso replies: No, you did..