Indian Showing Boob In Lake

Why do leaves change color in autumn?

(Question submitted by Alia)

In the forest, most trees are alike. They wooden trunks and green leaves. So far, no problem you say. True. But this can cause problems during the mating season (autumn). How a tree is to find their partner through this sea of green?

Hence the idea of color. Birch leaves their coat of yellow, red maples, etc.. This avoids confusion. Each species disperses its gametes to the right place.