We need to be wary of certain gases in the atmosphere, such as nitrogen dioxide as they cause pollution and are harmful for our breathing.
Holly, Larch
Luckily, there are ways to reduce the amount of air pollution- such as walking as much as possible and reducing the amount of car journeys you take.
70% of all air pollution comes from traffic! We were surprised that traffic is even worse than factories and aeroplanes, simply because there is just so much of it.
Charlie, Redwood
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