Only the starch from the corn is used to make ethanol, leaving the protein and valuable co-products for other uses.
(Only the starch from the corn; is used; to make ethanol; leaving the protein and valuable co-products for other uses) (Only the starch from the corn; to make; ethanol)
Only the starch from the corn Only the starch from the corn
is used to make
to make ethanol leaving the protein and valuable co-products for other uses
ethanol