On the nature trail. Take a short trip into a very special world, listen to the sounds, observe moving little wonders of nature and learn how important flora and fauna are for us humans. “Do you know how much water a tree drinks every day?” or “How many spines a hedgehog has?” The solution is very close at hand. Satisfy your thirst for knowledge on the forest nature trail. Test your parents' knowledge and show them that you can do better. Don't think that the adults know everything, because the puzzles are quite tricky.