Social Sciences, asked by chandavijay, 5 months ago

the chalk with teacher useon the black boardor calcium carbonate ( caco3 is a mineral if we eat chalk it can be harmful to us

Answers

Answered by akashbindjnvg

3

Answer:

less harmful for us.....

Answered by priyanshipanchal95

2

Answer:

Yes it is harmful to us

Explanation:

please mark me as brilliant or thank to my answer

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