This is a file from the Wikimedia Commons and may be used by other projects. Information from its description page there is shown below. Commons is a freely licensed media file repository.
Summary
DescriptionMouth of the Fly River of PNG (cropped).jpg
English: Water (H2O) The source of life on earth and the main element astronomy continues to seek beyond our galaxy's horizons. Simply without water there is no life. And without water the main scientific universal solvent there is no solutions to man's scientific mysteries.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue