environmental
black
catastrophe
chemical
concept
crisis
crude oil
dark
dirty
disaster
drain
drip
drop
droplet
economy
energy
environment
flammable
flow
fluid
fossil
fossil fuel
fuel
global warming
glossy
icon
ink
isolated
leak
liquid
oil
oil industry
paint
petrochemicals
petrol
petroleum
pollution
power
puddle
resource
shell
shiny
simple
spill
splash
splat
splotch
stain
wet