air

and

building

burning

chemical

chimney

combustible

combustion

commodity

complexity

condenser

cooking

electricity

energy

environment

ethanol

exterior

facility

factory

from

fuel

fuels

garbage

gas

generation

generator

industrial

industry

methane

methanol

modern

natural

oil

outside

pipelines

pipes

plant

pollution

power

powerhouse

produce

production

reactor

sewage

smell

station

steam

synthetic

toxic

treatment

unpleasant

waste