In art what does value refer to

Value defines how light or dark a given color or hue can be.

Explanation:

Values are best understood when visualized as a scale or gradient, from dark to light. The more tonal variants in an image, the lower the contrast. When shades of similar value are used together, they also create a low contrast image

relationship between pressure and air volume and led to the understanding of how respiration works; i believe this is the correct answer ; /// good luck

cheetos? that's the answer? ?