Biology, asked by shachi340tripathi, 12 hours ago

Asthma is caused by
1- constriction of airways
2-dilation of airways
3- ulcer in airways
4-none of the above

Answers

Answered by biswaspramila347

3

Answer:

None of the above

please mark me brainliest

Answered by olearn

0

Answer:

1) constriction is correct..

difficult to breathe., ya hope u understand.!

thankyou ,kindly find my help from my prev questions

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