LIFE SCIENCE

Detailed explanation-1: -Carbohydrates are a class of chemical compounds composed of carbon, hydrogen, and oxygen in 1:2:1 ratio, respectively.

Detailed explanation-2: -Carbohydrates contain only carbon, hydrogen and oxygen atoms; prior to any oxidation or reduction, most have the empirical formula Cm(H2O)n.

Detailed explanation-3: -All carbohydrates, including sugar, therefore contain the same three elements: carbon, hydrogen and oxygen.

Detailed explanation-4: -The common attributes of carbohydrates are that they contain only the elements carbon, hydrogen and oxygen, and that their combustion will yield carbon dioxide plus one or more molecules of Water.