Living organisms contain more water _________ substance.
                    举一反三
- Water is a kind of chemical substance.
 - noun, any substance that nourishes a living being
 - Nitrogen and oxygen are ___ important ___ most living organisms cannot survive without these elements.
 - The absorption curve is ( ). A: The curve of the relationship between the concentration of light-absorbing substance and absorbance. B: The curve of the relationship between the concentration of light-absorbing substance and transmittance. C: The curve of the relationship between the wavelength of incident light and the thickness of light-absorbing substance solution. D: The curve of the relationship between the wavelength of incident light and the absorbance of a light-absorbing substance.
 - Not all chemicals normally present in living ______ are harmless. A: therapies B: ordinances C: organisms D: orientations
 
