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rubbish carelessly dropped or left about (especially in public places)
litter
pollution
gasoline
petrol
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
liquid
trash
oil
petrol
undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
pollution
mud
flood
drought
the relationships between the air, land, water, animals, plants, etc., usually of a particular area, or the scientific study of this
weather conditions
climate
timepiece
ecology
the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time
way
car
traffic
route
to harm or spoil something
to break
to ruin
to damage
to remove
a substance that can make people or animals ill or kill them if they eat or drink it
poison
clear
clean
dirty
to disappear or stop being present or existing, especially in asudden, surprising way
to withdrow
to consume
to vanish
to alter
the act of removing harmful substances from something
pollution
ecology
defence
purification
things such as minerals, forests, coal, etc. that exist in a placeand can be used by people
natural resources
waste
surface
measures
the air, water, and land in or on which people, animals, andplants live
weather
ecology
environment
climate
the grey, black, or white mixture ofgas and very small pieces of carbonthat is produced when somethingburns
mist
smoke
fog
wind
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