The color of leaves on deciduous trees usually changes in the autumn season, and many broad-leaved trees are deciduous. Given these facts, on many broad-leaved trees, what usually changes in the autumn season among the following options:
- colors of the spectrum
 - chemical changes
 - color of branches
 - color of leaves
 - temperature
 - shape of branches
 - size of needles
 - bloom time


 

    color of leaves     