| A | B |
| A que no va a bajar la tasa de... | I bet that the rate of...won't go down. |
| las alternativas (a) | alternatives to... |
| el basurero | the garbage can |
| biológico(a) | organic |
| Calculo que van a implementar... | I predict that they are going to implement... |
| la calidad del aire/agua... | air/water quality |
| el carro eléctrico/híbrido | the electric/hybrid car |
| los combustibles | the fuels |
| cometer (un crimen,un error) | to commit (a crime); to make (a mistake) |
| conservar | to conserve |
| la contaminación | the contamination/pollution |
| crecer (c-->zc) | to grow |
| el crimen | the crime |
| de cultivo biológico | organic (products) |
| desarrollar | to develop |
| el desempleo | the unemployment |
| desperdiciar | to waste |
| la drogadicción | drug addiction |
| la energía solar | solar energy |
| la enfermedad | the sickness, the disease |
| las fuentes de energía | the sources of energy |
| la fusión nuclear | the nuclear fusion |
| el futuro | the future |
| el hambre | the hunger |
| innovador(a) | innovative |
| la ley (en contra/a favor de) | the law (against/in favor of) |
| el medio ambiente | the environment |
| LOS pesticidas (m.) | the pesticides |
| LOS programas (de) (m.) | the programs (for) (like many Greek words ending in -ma, this is masculine) |
| reciclar | to recycle |
| los recursos naturales | the natural resources |
| renovable/no renovable | renewable/non-renewable |
| sembrar | to plant |
| Es muy posible que el tráfico aumente con.. | It's quite possible that traffic will increase with... |
| Se adiverte que... | They warn/advise that... |
| Te apuesto que... | I bet you that... |
| Ya verás que van a promover... | You will see that they're going to promote... |
| contaminado(a) | contaminated/polluted (adjective) |