affect
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car
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change
chemical
climate change
conceptual
contaminated
contamination
crisis
earth
ecology
effect
environment
environmental
global
global factory
hazard
hazardous
illustration
industrial
industry
lave
management
measure
melting
natural
outline
planet
plant
polluting
problem
pullution
resource
risk
save
stress
temperature
thermometer
truck
vehicle
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warning
water
world