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.  .
War is full of barbaric actions and atrocities. Even by the horrors of the time, the bombing of Guernica was particularly brutal. It came to symbolize the cruelty of the Spanish Civil War. The bombing was actually carried out by the German air force or Luftwaffe. Elements of the German airforce were sent by Hitler [â¦]