The park's forests contain oak, maple, hickory, tulip poplar and other trees. In general, the green of spring leaves is fresher and lighter than the deep verdant hues of summer's mature canopy.

QUESTION: I have a few questions regarding wax begonias. Some types have light-colored green leaves, and some have dark-colored bronze leaves. I'm assuming one prefers more sun or shade than the ...

Leaves have a number of pigments, including chlorophylls, that are involved to a greater or lesser extent in photosynthesis: using light energy to make sugars. Chlorophylls appear green because ...