Carbon Monoxide depending on the type of fuel.
A percentage is a comparison of two numbers: only one is specified here.You could have CO2 released by aeroplanes as a percentage of:all gases released by aeroplanes,all greenhouse gases released by aeroplanes,all CO2 released - whatever the source,CO2 released from man-made sources.There are other comparators.
Sure. Nuclear power plants give off effectively no gases of any kind.
The collective nouns for aeroplanes are a flight of aeroplanes or a squadron of aeroplanes.
runway
Not really - the gases they give off are mainly methane.
It helps them to get air under the wings its a much better take off
No, aluminum does not give off any toxic fumes that are harmful in anyway. It does not produce gases nor does it vaporize.
Fireworks give off gases such as carbon dioxide, carbon monoxide, and nitrogen as they burn. These gases result from the combustion of the chemical components used to create the colorful displays and loud noises associated with fireworks.
Aeroplanes always have alierons. They are attached to the wings to give the plane lift.
It is a type of plastic however it is biodegradable and does not give off any gases
The engines give off some gases, but that has been considerably reduced.
Plants give off oxygen during photosynthesis and carbon dioxide during respiration.