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The chemical that gives plants their green appearance is called chlorophyll. The chlorophyll absorbs light which is what the plant uses to help make and use nutrients ...
Grass appears to be green as a result of the reflecting of light. The sun gives off ultraviolet rays which are absorbed by the grass. The grass absorbs all of ...
The iris is the ring of muscular tissue that determines our eye color. The iris is under the cornea, in front of the lens. It responds to light, causing the pupil ...