Effects of Photochemical Smog. Photochemical smog's effects cause damage to the respiratory system and environmental systems with the release of nitrogen oxide (NO), ozone and volatile organic compounds (VOCs). These effects are worse when the sun is highest because the pollutants react with it.
This cut is called a flank steak because it literally comes from the flank of the cow â its side, below the ribs. It's a fairly wide and thin cut; it's only 1 to 1 1/2 inches at its thickest and it becomes even thinner toward one end.
Look for flank steak that has a clear, red color. Beef normally is purplish-red, but when exposed to oxygen it takes on a cherry-red hue known as the âbloom.â While the exterior is bright red, the interior of the meat retains the darker color. Vacuum-packed flank steak also shows this purplish color.