Răspuns :
Exhaust fumes
Severe drought
Acid rain
Global warming
Greenhouse gases
Ozone layer
Aerosol sprays
Industrial waste
Fossil fuels
Exhaust Fumes
Severe drought
Acid rain
Global warming
Greenhouse gases
Ozone layer
Aerodol sprays
Industrials waste
Fossil Fuels
Severe drought
Acid rain
Global warming
Greenhouse gases
Ozone layer
Aerodol sprays
Industrials waste
Fossil Fuels