Take apples as an example. The nutritional density of an apple is 1.8, but that of a green kiwifruit is 1 1.4, and that of a golden kiwifruit is 13.4.
Density refers to the mass per unit volume of a substance.
The density of fruit juice is influenced by many factors, not a specific value.
Calculate the density of juice: 1, measure the quality of fruit 2, measure the volume of juice 3, and divide the quality by the volume to get the density of juice.