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.
The latest figures show that the average annual salary for a Nurse Practitioner working in the United States is around $91,450 which works out as $43.97 per hour, $1,758 per week and $7,620 per month. The table below shows how this compares to the national average wage.