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Why have humans evolved to be sensitive only to optical light? Why might this be
an advantage? Why might it be a disadvantage? [Hint: What wavelength does the
Sun preferentially emit its energy?] If there are organisms elsewhere in the
Universe sensitive to the other wavelengths, what would they look like? Sketch
your idea.
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Answers: 2
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Why have humans evolved to be sensitive only to optical light? Why might this be
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