| 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. |
| The forager expends 1 unit of energy per time period as a basal metabolic rate, independent of what it is doing. |
| He expends all his energies reacting to the incessant, queasy lurch of the metallic object confining his limbs. |
| A cup of coffee in the morning can increase performance, but too much coffee expends energy and can create long-term exhaustion. |
| Precycling represents the stage before recycling and, unlike recycling, it expends little energy. |
| Movement expends energy and can attract predators, and increased movement capacity may evolve only at the sacrifice of reproductive effort. |
