41. Should the metal ducts be covered with some kind of insulation to cut down on the waste of energy ? 42. Thus antelopes really are indulging in a dangerous waste of energy when they stot in front of a cheetah. 43. "It's a waste of energy to go into a runoff when we could join hands and win the first one," 44. To be opposed to ( copying coordinates ) is a waste of energy , because people are going to do it. 45. This would have led to a great waste of energy and so they were never seriously considered for industrial use. 46. Once competition between males was no longer a selective force, producing toxic chemicals apparently became a maladaptive waste of energy . 47. I realize there is no reason to be angry or sad, that it is a waste of energy and of life. 48. This may be because the sound of a running stream drowns out any calls, and it becomes a waste of energy . 49. Nevada also has a $ 5 " waste of energy " fine for violators clocked at speeds up to 75 mph 50. Other butterflies have evolved to look like the speedy ones so that birds figure chasing them is a waste of energy .
