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's Blue Period - 1901 to 1904. The Blue Period of Picasso is the period between 1900 and 1904, when he painted essentially monochromatic paintings in shades of blue and blue-green, only occasionally warmed by other colors.lindness is a recurrent theme in Picasso's works of this period, also represented in The Blindman's Meal (1903, the Metropolitan Museum of Art) and in the portrait of Celestina (1903). Other frequent subjects include female nudes and mothers with children.