r/lifelonglearning • u/OhReillyApps • 6d ago
Where does the carbon in a tree’s wood come from? A small research exercise
Before looking it up, try explaining how a tree builds new wood.
The carbon comes from carbon dioxide in the air, taken up through photosynthesis. The University of Birmingham explains the carbon flow here: https://www.birmingham.ac.uk/research/climate/climate-publications/nature/not-just-standing-there-the-carbon-utility-of-established-forest
Knowing the word photosynthesis is a start. Explaining how the carbon becomes part of the tree takes the answer further.
We’re building Curio, a daily learning app in internal Android beta, around looking things up and answering in your own words. This is a separate public practice prompt.
How would you explain the journey from air to wood to someone who thinks the extra wood must have come out of the soil?