If you have asthma, high amounts of (blank) can make it worse.
greenhouse gasses
air pollution
air pressure

Air pollution is the answer. The substances in the air could be pollutants which can harm your airways which can be really harmful to an asthmatic. I personally know because i have asthma myself.

Hope I hepled :)

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mm184827 mm184827 · Answer 2 · 2017-04-13T16:56:59+02:00

mm184827 mm184827

13-04-2017

air pollution probably i mean think about it if youre breathing in air thats bad for you it could make your lungs freak out

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If you have asthma, high amounts of (blank) can make it worse. greenhouse gasses air pollution air pressure

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If you have asthma, high amounts of (blank) can make it worse.
greenhouse gasses
air pollution
air pressure