the world
Clean air
el aire puro
to threaten
amenazer
pollution
contaminacion
es pecie en peligro de extincion
endangered species
to destroy
destruir
climate
to improve
mejorar
flood
investigacion
investigation
to decrease
cisminuir
environment
medioambiente
to support
apoyar
erosion
erosion
niebla
smog
to harm
herir
earthquake
temblur
ozone layer
capa de ozono
ground, soil
trerra
planeta
planet
to fly
volar
oil
aceite
risk
riesgo
landslide
recursos naturates
natural resource
to protect
proteger