el aire puro
clean air
el basurero
garbage container
la biodiversidad
biodiversity
la capa de ozono
ozone layer
el clima
climate
la contaminaci�n
pollution, contamination
la deforestaci�n
deforestation
el derrumbe
landslide
el efecto invernadero
greenhouse effect
la erosi�n
erosion
las especies en peligro de extinci�n
endangered species
la inundaci�n
flood
el medio ambiente
environment
no renovable
nonrenewable
el petr�leo
oil
el planeta
planet
el recurso natural
natural resource
la responsabilidad
responsibility
el riesgo
risk
la sequ�a
drought
el smog
smog
el suelo
ground, soil
el temblor
earthquake
da�ar
to harm
destruir
to destroy
disminuir
to diminish, to decrease
fomentar
to foment, to support
proteger
to protect
respirar
to breathe
reutilizar
to reuse
valorar
to value
apreciar
to appreciate
complejo(a)
complex
desarrollar
to develop
el desarrollo
development
la innovaci�n
innovation
el invento
invention
la investigaci�n
research
mejorar
to improve
reemplazar
to replace
amenazar
to threaten
extinguirse
to become extinct
informarse
to keep informed
el porvenir
future
responsable
responsible
la transformaci�n
transformation
volar
to fly
votar
to vote