Question R8 Q5 - NSB Round Robin 2012

On a per gram basis, why do carbohydrates contain less energy than hydrocarbons?

W) Carbohydrates contain oxygen and hydrocarbons do not

X) Carbohydrates cannot be burned and hydrocarbons can

Y) Hydrocarbons come from fossilized animals and plants but carbohydrates come from live or recently dead plants and animals

Z) Carbohydrates can be eaten but hydrocarbons cannot

Science Bowl Question