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.  .
The work of art was completed by Picasso in June, 1937 and depicts turmoil, people and animals suffering, with buildings in disarray â torn apart by violence and mayhem. Guernica can be summarized by its individual components as follows: