The diagram below shows a portion of the water cycle. Diagram showing a process between a box containing the label 'P' and a box containing the label 'Q.' Between the two boxes are two arrows stacked on top of each other. One arrow is pointing to the right and is labeled 'Precipitation.' One arrow is pointing to the left and is labeled 'Evaporation.' Which of these conclusions is correct about P and Q in the diagram? P represents the land and Q represents the ocean. P represents the ocean and Q represents the land. P represents the land and Q represents the atmosphere. P represents the atmosphere and Q represents the ocean.