Original images came from Pixaby.com

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Quimono, P. (2016, October 24). Water Drop Liquid. Retrieved from https://pixabay.com/photos/water-drop-liquid-splash-wet-1759703/

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95893, P. (2017, May 15). Calm Water Clear. Retrieved from https://pixabay.com/photos/calm-water-clear-drink-glass-2315559/

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1465301, P. (2017, June 7). Glass Water Fresh. Retrieved from https://pixabay.com/photos/glass-water-fresh-pour-liquid-2374311/