Remix tree: https://scratch.mit.edu/projects/1011823482/remixtree 1 foot per hour = .0002 miles per hour 1 inch per hour = .083 feet per hour 1 cm per hour = .4 inches per hour 1 cm per year = .00011407711 cm per hour 1 cm per century = 0.01 cm per year 1 cm per millennium = 0.1 cm per century 1 cm per megaanum = 1/1000 c