| 1 | In nature, soil transforms wastes into resources. | |
| 2 | Every time they found the right feces, they got a drink of water. | |
| 3 | The scientists trained six mice to run a maze in search of infected feces. | |
| 4 | Looking at your own feces is one of the easiest ways to make yourself throw up. | |
| 5 | On the other hand, fertilizer from human waste provides nutrients essential to rebuilding soil. |