a serious influence on human activitiescausea serious influence on human activities
stains(passive) are caused bystains
damaging acids(passive) caused bydamaging acids
in heavy soiling of the coatinghas resultedin heavy soiling of the coating
monuments surface degradation in urban environmentscausesmonuments surface degradation in urban environments
flue gas emissions(passive) caused byflue gas emissions
a runaway greenhouse effectcausinga runaway greenhouse effect
hair and scalp impurities(passive) caused byhair and scalp impurities
from the continentsoriginatingfrom the continents
the deposit of carbon black and dust on glacierscausesthe deposit of carbon black and dust on glaciers
respiratory distresscausedrespiratory distress
environmental harm , typically to forests and lakescausesenvironmental harm , typically to forests and lakes
discolouration and staining of the coloursalso causeddiscolouration and staining of the colours
excessive corrosion or for areas where the fence line is difficult to accesscausesexcessive corrosion or for areas where the fence line is difficult to access