Correct answer: Halftone
The halftone is a reprographic technique, which uses continuous imaginary tone by the use of dots, which vary in size or in spacing.
Example: The shades of gray in print are produced by breaking the image of the object into tiny dots that appear to blend into a continuous tone when viewed with a naked eye. Such a pattern of tiny dots is called a halftone.
i believe the answer is 300. ;)
a chemical substance produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.