This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Saltwater freezing point. en graph created using Excel and data originally found on at the article for sodium chloride Plot of freezing point temperature in degrees vs concentration of NaCl in aqueous solution of nearfreezing water salinity own AstroImager Sodium chloride Diagrams in English Water salinity