The volcano contains three striking summit crater lakes of varying colors. According to Kelimutu National Park officials, the colour changes as a result of chemical reactions resulting from the minerals contained in the lake perhaps triggered by volcano gas activity.
The green color of many lakes comes from high concentrations of chlorophyll containing algae. Green lakes can support a large number of fish and other organisms, but also may produce harmful algal blooms "The ocean looks blue because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned. Same reason the sky is blue."
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Author: AnanthArchives
June 2021
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