What statement best summarizes the relationship between photosynthesis and cellular respiration?

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?