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.
Flank steak. This steak is lean, boneless and flavorful. Marinate to tenderize. Carve across the grain into thin slices after cooking. This steak also meets government guidelines for lean. Nutrition information per 3-ounce cooked serving: 158 calories; 6 g fat (3 g saturated fat; 2 g monounsaturated fat); 24 g protein; 0.5 mg vitamin B6; 1.4 mcg vitamin B12; 1.5 mg iron; 4.3 mg zinc.