Read the article by Dr. Susan M. Kain (White Animals at White Sands).

Q1: In a White Sands like environment, what factors would lead organisms to evolve toward white color, and why are some organisms not white?

Q2: Imagine the situation of animals that live permanently in the complete absence of light.  Why are these animals often blind?    

Q3: Does being blind (in a completely dark environment) have advantages, and if so, what might they be?

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