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Biology, 30.04.2021 03:00 lilianajimva

What do these two changes have in common? saliva breaking down a piece of bread

a penny tarnishing

Select all that apply.

both are caused by heating
both are chemical changes
both conserve mass
both are changes of state


What do these two changes have in common? saliva breaking down a piece of breada penny tarnishing

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What do these two changes have in common? saliva breaking down a piece of bread

a penny...
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