The element of art that describes the relative lightness or darkness of a hue, compared to another hue, is known as . a. intensity b. value c. form d. saturation e. contrast

Is it even part of math

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.