Question

____ are made from carbon , hydrogen and oxygen .​

Answer 1

Carbohydrates

Carbohydrates are organic compounds that contain only carbon, hydrogen, and oxygen. They are the most common of the four major types of organic compounds. There are thousands of different carbohydrates, but they all consist of one or more smaller units called monosaccharides.

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Answer 2

Answer:

carbonic acid H2CO3

Explanation:

as there are all the elements you demanded so its one of the answer