| Precycling represents the stage before recycling and, unlike recycling, it expends little energy. |
| Thus, the energy a stevedore expends in unloading boxes from a ship is recycled to him in the form of the money which he uses to buy bread. |
| Under this sequence, the capitalist expends a sum of money M in buying materials and machinery and in paying wages. |
| Movement expends energy and can attract predators, and increased movement capacity may evolve only at the sacrifice of reproductive effort. |
| Winning is all for the chess player, who expends enormous energy in each game he plays. |
| The forager expends 1 unit of energy per time period as a basal metabolic rate, independent of what it is doing. |
