Nhận biết (M1) Seawater contains many trace elements that can be categorized in one of three ways based on their significance in sustaining living organisms: essential, possibly essential, or nonessential. Molybdenum, whose chemical symbol is ______, is classified as an essential element.
Which choice completes the text so that it conforms to the conventions of Standard English?
Nhận biết (M1)
Seawater contains many trace elements that can be categorized in one of three ways based on their significance in sustaining living organisms: essential, possibly essential, or nonessential. Molybdenum, whose chemical symbol is ______, is classified as an essential element.
Which choice completes the text so that it conforms to the conventions of Standard English?
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