Economies of Scale and Long Run Average Cost (LRAC) 1  In the long run all costs are variable and the scale of production can change (i.e. no fixed inputs) 2  Economies of scale are the cost advantages from expanding the scale of production in the long run. The effect is to reduce average costs over a range of output. These lower costs represent an improvement in productive efficiency and can give a business a competitive advantage in a market.
Tiger sharks (pictured) are among the 17 species that appear to lack color vision. Sharks may be able to smell blood from miles away, but they probably don't know how red it is: New research suggests sharks are color-blind.
Answer: Shark skin is like a sandpaper which plays a significant role in the dynamic shark movements. Internally, this skin has millions of tiny scales which have the form of teeth called âdental dermiclesâ which create a thick mesh with a protein called collagen. The skin covers muscles and has them attached in a way that creates an armor which acts in a similar way to an external skeleton, although it is not an exoskeleton. Links to other pages in this site. What Color Is The Hammerhead Shark? How Many Teeth Does A Great White Shark Have? Why Do The Great White Sharks Attack Humans? Where Do Sharks Live?