Many acids corrode many metals, such as iron and copper, and oxygen does the same thing to them .
(A) Many acids corrode many metals, such as iron and copper, and oxygen itself does the same thing to them.
ITSELF has been added extra frm original.. so may be original missed out on it..
PRONOUN error.. THEM in end of the sentence can refer to acids or metals... There have been one odd instances where 'them' being 'object' should refer to the 'object' if both object and subject have been given.
Also 'the
...
(A) Many acids corrode many metals, such as iron and copper, and oxygen itself does the same thing to them.
ITSELF has been added extra frm original.. so may be original missed out on it..
PRONOUN error.. THEM in end of the sentence can refer to acids or metals... There have been one odd instances where 'them' being 'object' should refer to the 'object' if both object and subject have been given.
Also 'the
...
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