engines 0.0 / 5 ? BiologyenginesGCSEEdexcel Created by: SerbanCreated on: 10-11-19 13:02 what is pollution the presence in or introduction into the environment of a substance which has harmful or poisonous effects. 1 of 5 what does combustion mean combustion is another word for burning 2 of 5 why do cars need a source of energy so that the cars can move 3 of 5 give two examples that of fuel that are, or have been, used in vehicles petrol, hydrogen, batteries 4 of 5 explain how the fuel in cars help to make it move the burning fuel produced energy that transfers to the wheels to help the car move 5 of 5
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