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No; some mice may have developed lung cancer in less than 500 days of cigarette smoke exposure.
Out of the three, only 1 is acidic because litmus paper turns red in acidic compounds and blue in basic compounds.
Okay, I googled it because I wasn’t sure but, according to the article *ahem* “Destructive as forest fires may seem, forests often regrow in their wake. In some cases, however, forest fires become so intense they cause severe damage to the soil that may take years or even decades to repair”.
Hope this helped!
The purpose of an indicator is to test how acidic or basic something is.
