Chlorophyll Breaks Down. But in the fall, because of changes in the length of daylight and changes in temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible and give the leaves part of their fall splendor. At the same time other chemical changes may occur, which form additional colors through the development of red anthocyanin pigments.
Wages vary by the type of practice. Veterinarians who specialize in treating horses have the lowest starting wage. On average, they earn $2,290/month. Those who specialize in treating small animals, such as dogs and cats, start at an average of $2,580/month.
As of May 2011, veterinarian salaries ranged from a low of $50,480 per year, or $24.27 per hour, to a high of $141,680 annually, or $68.11 hourly, according to the BLS. The mean wages for 55,410 vets was $91,250 yearly, or $43.87 per hour.