Farm system boundaries: Discussion of system boundaries in Chapter 3 mainly relates to farms of this type. Briefly, boundaries of Type 2 farm systems (and of Types 1, 3 and 4) segregate them distinctly from the external world, but the boundaries between individual farms are relatively weak.
What is Chromium? Chromium is a steel-gray lustrous metal that is important as an additive in the manufacture of steel alloys (chrome steel, chrome-nickel steel, stainless steel) and greatly increases the durability and resistance of these metals; hence its use in metal prosthetic implants.
Chromium is a mineral that helps to maintain normal blood glucose levels by enhancing the effects of insulin. Your body also needs chromium for healthy carbohydrate, protein and fat metabolism. Rich sources of chromium include processed meats, broccoli, green beans, mushrooms and whole-grain products, particularly bran cereals. Refined grains have been shown to have less chromium content than whole grains.