I want to know the answer to the following question:
Which element in wood composes about 42% of its weight?
All the background I'm provided with is that "The chemical composition of wood varies from species to species, but is approximately 50% carbon, 42% oxygen, 6% hydrogen, 1% nitrogen, and 1% other elements (mainly calcium, potassium, sodium, magnesium, iron, and manganese) by weight.". Is that enough to answer the question?