Question

the sea has many variety of fishes
( which is subject)​

Answer 1

$\large\sf \bf \underline\red{The \: sea \: has \: many \: variety \: of \: fishes.}$

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$\large\sf \bf \underline\pink{In \: upper \: Sentence \: Subject \: was \: <strong><u>FISHES</u></strong>}$

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$\large\sf \bf \underline\green{BECAUSE \: FISHES \: WAS \: THAT \: WORD \: ON \: WHICH \: SENTENCE \: WAS \: BEING \:RELATED..}$