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.  .
Well-illustrated analysis of Pablo Picasso paintings: blue period, 1901-1904. Pablo Picasso (1881-1973), Spanish; School of Paris painter, sculptor, etcher, lithographer, ceramist and designer; influenced 20th century art enormously; worked in an unprecedented variety of styles. Picassoâs art is categorized into periods. The most well-known periods in his work are the Blue Period, the Rose Period (1905â1907), the African-influenced Period (1908â1909), Analytic Cubism (1909â1912), and Synthetic Cubism (1912â1919). Names of many of his later periods are not as clearly defined.