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Give any two examples for “Nano" in natu...

Give any two examples for “Nano" in nature.

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(i) Single strand DNA: A single strand of DNA, the building block of all living things, is about three nanometers wide.
(ii) Morpho Butterfly: The scales on the wings of a morpho butterfly contain nanostructures that change the way light waves interact with each other, giving the wings brilliant metallic blue and green hues. Mimic in laboratories - Manipulation of colours by adjusting the size of nano particles with which the materials are made.
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