Trees in the Polish mountains destroyed by acid rain.
Keywords
acid,
acidic,
atmosphere,
chemical,
danger,
dead,
destroyed,
dioxide,
dried,
earth,
ecology,
effect,
emission,
environment,
flora,
forest,
global,
industry,
landscape,
mountain,
natural,
nature,
nitrogen,
park,
planet,
plant,
pollution,
rain,
sick,
sulfur,
tragedy,
tree,
tree,
warming,
weather