1. As the water moves through the paper towel, it leaves behind the individual colors that had been mixed together in the marker. (Google)
2. To make the paper towel unit look less blocky, we need to round off the base of the paper towel holder. (Google)
3. While paper towel and hot air dryers involve about the same amount of energy over their lifetimes, making paper takes more resources and produces more pollution. (Google)