Why is the conversion of ethanol to ethanoic acid an oxidation reaction?

Why is the conversion of ethanol to ethanoic acid and oxidation reaction?

Why is conversion of ethanol into ethanoic acid an oxidation reaction ?

Conversion of ethanol to ethanoic acid is a/an

(a) Draw the structure of the following compounds: (i) Ethanoic acid (ii) Butanone. (b) why is conversion of ethanol to ethanoic acid considered an oxidation reaction?

Give Scientific reasons: Conversion of ethanol to ethanoic acid is an oxidation reaction.