Science, asked by hrahmanFatima8151, 1 year ago

What did John Scott Haldane introduce in coal mines to detect gas?
a) Frogs
b) Electronic gas detectors
c) Canaries
d) Litmus paper

Answers

Answered by Anonymous

0

Ur answer.

C. Canaries

✔✔✔✔

Answered by angelnunu

0

John Scott Haldane introduce in coal mines to detect gas is Canaries.

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