The mixture of red, purple, orange and yellow is the result of chemical processes that take place in the tree as the seasons change from summer to winter ... which gives the leaf its green color. This ...

"The trees respond to their changing environment and transform these environmental changes into ... Source: Robert Joly, (765) 494-6997; Internet, joly@sage.cc.purdue.edu NOTE TO JOURNALISTS: A color ...

Read Dr. Don Leopold's Guide to Fall Colors in Upstate New York with color images of dozens of trees and shrubs. Every autumn we revel in the beauty of the fall colors. The mixture of red, purple, ...

it is green in color, not gray. Gray tree frogs can change their color depending upon the substrate where they are residing. If they are on a tree trunk, they are often gray in color, and if they ...