Rather than depend solely upon visual unity, an artist will sometimes create CONCEPTUAL unity by unifying the ideas in a work of art. :) Hope this helps
Answer:
Natural Fibers: Cotton, Silk, Fur
Man-made: Polyester, Nomex, Kevlar
Explanation:
Looking at the side of someones face. Your eye wants you to go to the letters on the left side. Your Gaze hits the side of my face