<span>A pigment is a substance that absorbs some wavelengths of lights and reflects other, giving something its color. Chlorophyll is the green substance that absorbs light and provides energy for photosynthesis.
Answer to your question: Pigment
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Between 2 weeks and a month
B.) Zinc
(I'm trying to get the right answer without Google)
The sun. lol. It is closer to Earth, therefore bigger to us, and not just a small point of light.