| It's necessary | Es necesario |
| again | otra vez |
| incredible | increíble |
| often | a menudo |
| one must | hay que |
| poor | pobre |
| the aluminum | el aluminio |
| the bag | la bolsa |
| the bottle | la botella |
| the box | la caja |
| the camp | el campamento |
| the can | la lata |
| the cardboard | el cartón |
| the children | los niños |
| the clinic | la clínica |
| the community | la comunidad |
| the experience | la experiencia |
| the female volunteer | la voluntaria |
| the garden, yard | el jardín |
| the glass | el vidrio |
| the hospital | el hospital |
| the little boy | el niño |
| the little girl | la niña |
| the male volunteer | el voluntario |
| the neighborhood | el barrio |
| the newspaper | el periódico |
| the older man | el anciano |
| the older people | los ancianos |
| the older woman | la anciana |
| the others | los demás |
| the people | la gente |
| the plastic | el plástico |
| the primary school | la escuela primaria |
| the problem | el problema |
| the project | el proyecto |
| the recycling center | el centro de reciclaje |
| the river | el río |
| the street, road | la calle |
| the toy | el juguete |
| the volunteer work | el trabajo voluntario |
| to be careful | tener cuidado |
| to decide | decidir |
| to participate | participar |
| to pick up, to collect | recoger |
| to recycle | reciclar |
| to reduce | reducir |
| to reuse | reusar |
| to say, to tell | decir |
| to separate | separar |
| to take care of | cuidar |
| to take, to carry | llevar |
| to throw (away) | tirar |
| unforgettable | inolvidable |
| used | usado |