Birdwatch Note Rating
2023-07-12 14:25:06 UTC - HELPFUL
Rated by Participant: 75213CA2B75611EFDFD91F2060425DE479A7978FC72A351E2CF42F4836137CDF
Participant Details
Original Note:
The black plastic balls mentioned in the video serve as a barrier to water evaporation when the reservoir levels are low. By composition and design, the dark material absorbs and prevents the sun's rays from acting under the surface of the water. https://www.sciencealert.com/here-s-what-s-really-going-on-with-those-black-balls-in-the-la-reservoir
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