environmental
abandon
black
business
businessman
concept
contaminate
contaminated
contamination
damage
danger
decay
destroy
destruction
dioxide
dirt
dirty
disaster
discard
disposal
dump
earth
ecological
ecology
environment
future
global
gray
ignorance
industry
man
nature
person
plastic
poison
pollute
polluted
pollution
problem
protect
protection
recycle
rubbish
smoke
toxic
trash
waste