Answer:
the blue one is 10
the yellow one is 7.. not really sure about this one
Dissolved oxygen refers to the level of free, non-compound oxygen present in water or other liquids.
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"Solarisation (or solarization) is a phenomenon in photography in which the image recorded on a negative or on a photographic print is wholly or partially reversed in tone. Dark areas appear light or light areas appear dark. The term is synonymous with the Sabattier effect when referring to negatives."