a chemical substance that reflects or transmits only certain light rays and thus imparts color to an object. For example, a substance that absorbs all but red rays, which it reflects, will appear red.
pltintern
Christine Song supports both Project Learning Tree (PLT) US and Canada's program delivery and reporting, program research, and communications. Christine holds a Master of Environmental Science from the University of Toronto and and a combined degree with a Bachelor of Science in ecology and zoology and a Bachelor of Science in anthropology from the University of Calgary.
