nitrogen oxide

Preposition: into

• atmosphere: When power stations burn coal they release sulfur dioxide and nitrogen oxide into the atmosphere.

Converse of object

• include: Emissions dangerous to health include nitrogen oxides, carbon monoxide, hydrocarbons, lead and particulates.
• emit: Health effects of vehicle pollution Nitrogen dioxide One of the nitrogen oxides emitted in vehicle exhausts.
• produce: The dangerous gas is produced when nitrogen oxides produced by cars reacts with hydrocarbons in sunlight.
• form: State that nitrogen and oxygen from the air react inside a car engine to form nitrogen oxides ( these are poisonous gasses ).

Adjective modifier

• more: Busses emit 68 times more nitrogen oxides and 37 times more particulates than an equivalent car.
• harmful: It also absorbs oxygen to reduce the amount of harmful nitrogen oxides released.

Modifies a noun

• emission: Improving air quality by reducing nitrogen oxide emissions by 80 per cent over the same period.
• -are: Other forms of pollution - sulfur dioxide and nitrogen oxide -are also emitted by fossil fuels.