Context: During the summer growing season, phosphate is at a high level. It has a vital role in the breakdown of the sugars manufactured by chlorophyll. But in the fall, phosphate, along with the other chemicals and nutrients, moves out of the leaf into the stem of the plant. When this happens, the sugar-breakdown process changes, leading to the production of anthocyanin pigments. The brighter the light during this period, the greater the production of anthocyanins and the more brilliant the resulting color display. When the days of autumn are bright and cool, and the nights are chilly but not freezing, the brightest colorations usually develop.

Question: At which period of the year are phosphates high?
Answer: the summer growing season

Question: What causes sugar created by chlorophyll to breakdown?
Answer: phosphate

Question: Where does phosphate within a leaf move in the fall?
Answer: the stem of the plant

Question: What is created in fall when phosphates retreat to the stems of plants?
Answer: anthocyanin pigments

Question: What occurs in bright light to leaves during fall?
Answer: greater the production of anthocyanins

Question: What does chlorophyll have a vital role in breaking down?
Answer: Unanswerable

Question: What moves from the leaf into the stem during the summer?
Answer: Unanswerable

Question: What does the chloropyll breakdown process lead to?
Answer: Unanswerable

Question: What leads to the production of anthocyanin chlorophyll pigments?
Answer: Unanswerable