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.  .
Pablo Picasso painted one of his most celebrated and politically powerful pieces Guernica in response to the Nazi bombing of the Basque town of Guernica in April 1937. Aiding insurgents in the Spanish Civil War, German planes bombed and destroyed the town, indiscriminately killing women and children.