Bio assignment – calculating ecological footprints
Calculating Ecological Footprints- Chapter 12 In 2010, under its WaterSense program, the EPA began promoting showerheads that produce still-lower flows of 2 gallons per minute (gpm). Some cities are already requiring these, and some models today go even lower. How much water would you save per year by using a 2-gpm showerhead instead of a 2.5 gpm showerhead? How […]