area
balance
bay
business
catastrophe
chemical
color
colorful
danger
dirt
dirty
disease
ecology
emerge
environment
environmental
fuel
garbage
gas
golden horn
industrial
industry
lake
liquid
nature
ocean
oil
petrol
petroleum
plastic
pollute
polluted
pollution
production
protection
sea
spill
state
storage
surface
technology
toxic
vladivostok
waste
water