Factory chimneys that pollute the air. Smoke from the chimney. Ecological problem.
Palabras clave
air,
atmosphere,
chemical,
chimney,
climate,
cloud,
damage,
dirty,
ecological,
ecology,
emission,
emit,
energy,
environment,
factory,
gas,
global,
greenhouse effect,
industrial,
industry,
landscape,
man,
mask,
ozone,
poison,
pollute,
pollution,
purity,
river,
seascape,
silhouette,
sky,
smog,
smoke,
steam,
sunrise,
sunset,
technology,
toxic,
vapour,
warming,
water