Answer to Question 1
Both storms show turbulent, oval flow patterns. The white spot was of much shorter duration than the Red Spot. The white spot's colors are believed to be due to ammonia crystals; the Red Spot's colors are thought to involve chemical reactions that include sulfur or sulfur-containing compounds. Guesses about the causes will vary, but might touch on temperatures, pressure, wind speeds and different chemical reactions.
Answer to Question 2
D