generate questions: People have used wood for millennia for many purposes, primarily as a fuel or as a construction material for making houses, tools, weapons, furniture, packaging, artworks, and paper. The year-to-year variation in tree-ring widths and isotopic abundances gives clues to the prevailing climate at that time.
What has been the primary purpose of wood for millennia other than fuel? {sep_token} What is often made of wood that provides shelter to people? {sep_token} For clues about the climate of a place, we can look at variation in isotopic abundances or what other thing? {sep_token} What could be made out of wood that could be used to fight off attackers? {sep_token} What category of items often constructed from wood does a chair belong to? {sep_token}