In fact, since at least as far back as Aristotle, the basic formula for comedy has had more to do with conventions and expectations of plot and character than with a requirement for lewd jokes or cartoonish pratfalls. In essence: A comedy is a story of the rise in fortune of a sympathetic central character.
The Acid Rain Problem. Carbon dioxide in the air can dissolve in rain water to form carbonic acid, H 2 CO 3. CO 2 + H 2 O H 2 CO 3. Carbonic acid is a weak acid. It partially ionises to form hydrogen ions. H 2 CO 3 H + + HCO 3 -. The hydrogen ions from carbonic acid give natural rain water a slightly acid pH value of 5.6.
Acid rain comes in many forms: rain, snow, sleet, hail and fog (wet deposition), and as deposits of acid particles, aerosols and gases (dry deposition).It is formed when sulfur dioxide (SO 2) and nitrogen oxides (NO x) combine with moisture in the atmosphere to produce sulfuric acid and nitric acid.Several sources that contribute to creating acid rain include: 1  Combustion of fossil fuels (coal, oil, natural gas, wood, etc.) for energy.t is formed when sulfur dioxide (SO 2) and nitrogen oxides (NO x) combine with moisture in the atmosphere to produce sulfuric acid and nitric acid. Several sources that contribute to creating acid rain include: 1  Combustion of fossil fuels (coal, oil, natural gas, wood, etc.) for energy.