Birch bark is white thanks to a substance called betulin: it reflects sunlight and keeps the tree from overheating. The little black dashes are tiny 'windows' the trunk breathes through.
Beep! I can't resist scanning these stripy trunks like at the store!
Color names — just like in kids mode. Tap a color to see it in the kids color encyclopedia.
No records yet — this picture is waiting for its first artist. It could be you.