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.  .
Overview of Guernica, Spain. 1  Many around the globe have heard of Guernica thanks in part to Pablo Picasso. It was this town that was bombed in 1937, the events of which inspired Picassoâs most famous piece of art â âGuernica.â The bombing almost entirely destroyed the city and many civilians perished.