| It's necessary | Hay que | 
| It's our duty | Es nuestro deber | 
| It's our responsibility | Es nuestra responsabilidad | 
| It's up to us | Nos toca a nosotros | 
| We're obligated to | Estamos obligados a | 
| electric car | el carro eléctrico | 
| electrical appliance | el aparato eléctrico | 
| future | el porvenir | 
| nuclear energy | la energía nuclear | 
| solar energy | la energía solar | 
| they should | deben | 
| to destroy | destruir | 
| to develop | desarrollar | 
| to discover | descubrir | 
| to throw out | botar | 
| they should | deben | 
| to destroy | destruir | 
| to develop | desarrollar | 
| to discover | descubrir | 
| to throw out | botar |