Trees like Pines, Evergreens, and Firs etc. have a waxy coating so the leaves don't fall off or change colors.
But on the other had the Maples and the oaks etc don't have the wax on them so they have to come up with something else to live longer.
As it get closer to fall plants get less hours of sunlight. Trees then stop making food. The photosynthesis process and slowing the production of chlorophyll until they stop making the food at all and the green color of the leaf goes away and changes to a color like green, red, orange, yellow, or even brown.
But on the other had the Maples and the oaks etc don't have the wax on them so they have to come up with something else to live longer.
As it get closer to fall plants get less hours of sunlight. Trees then stop making food. The photosynthesis process and slowing the production of chlorophyll until they stop making the food at all and the green color of the leaf goes away and changes to a color like green, red, orange, yellow, or even brown.