| ally | el aliado/la aliada |
| astonishment | el asombro |
| bird | el ave/el pájaro |
| bombing | el bombardeo |
| closed season | la veda |
| coast | la costa |
| countryside/field | el campo |
| cow | la vaca |
| deforestation | la deforestación |
| desert | el desierto |
| development | el desarrollo |
| disposable | desechable |
| diver | el buzo |
| diving | el buceo |
| drought | la sequía |
| dry | seca/seco |
| earthquake | el terremoto |
| ecosystem | el ecosistema |
| endangered | en peligro de extinción |
| energy source | la fuente de energía |
| environment | el medio ambiente |
| environmental | ambiental |
| erosion | la erosión |
| facing | enfrente de |
| female animal | la hembra |
| fire | el incendio |
| fish | el pez |
| flood | la inundación |
| frog | la rana |
| fuel | el combustible |
| global warming | el calentamiento global |
| harmful | dañina/dañino |
| hope | la esperanza |
| humid/damp | húmeda/húmedo |
| hurricane | el huracán |
| hurry | la prisa |
| isolated | aislada/aislado |
| land/earth | la tierra |
| land/terrain | el terreno |
| landscape/scenery | el paisaje |
| lightning | el relámpago |
| lion | el león |
| mangrove swamp | el manglar |
| monkey | el mono |
| mountain | el monte/la montaña |
| mountain range | la cordillera |
| natural resources | los recursos naturales |
| on the shore | a orillas de |
| outdoors | al aire libre |
| ozone layer | la capa de ozono |
| pig | el cerdo |
| poison | el veneno |
| poisonous | venenosa/venenoso |
| pollution | la contaminación |
| pregnant | preñada |
| protester | el manifestante/la manifestante |
| purity | la pureza |
| rabbit | el conejo |
| rain forest | el bosque lluvioso |
| reef | el arrecife |
| refuge | el refugio |
| renewable | renovable |
| sea | el mar |
| sheep | la oveja |
| snake | la serpiente |
| species | la especie |
| thunder | el trueno |
| tiger | el tigre |
| to be about to | disponerse a |
| to become extinct | extinguirse |
| to bite | morder |
| to blossom | florecer |
| to contribute | contribuir |
| to darken | oscurecer |
| to destroy | destruir |
| to disappear | desaparecer |
| to feed | dar de comer |
| to foresee | prever |
| to give birth | dar a luz |
| to hunt | cazar |
| to pollute | contaminar |
| to preserve | conservar |
| to protect | proteger |
| to recycle | reciclar |
| to sacrifice | sacrificar |
| to save | salvar |
| to solve | resolver |
| to trap/catch | atrapar |
| to turn back | darse la vuelta |
| to use up | agotar |
| to waste | malgastar |
| toxic | tóxica/tóxico |
| tree | el árbol |
| tropical storm | la tormenta tropical |
| valuable | valiosa/valioso |
| wild | salvaje |
| worthy | digna/digno |