The United States Geological Survey estimates that (as of 2005, the most recent year for which data is available) we withdraw 410 billion gallons of water a day, including both fresh and saline water. Most (80%) of these withdrawals go to thermoelectric power plants (for cooling) and agriculture (for watering crops).
Level 4 is the hair color level that is represented as dark brown. It is one of the most common natural hair colors and also very commonly found in hair dye. Level 4 is also common in red or...
Figure out which level your own color is. You can do this by comparing your hair color to a chart, with level 1 being the darkest black and level 10 being the whitest blonde. These charts are available at beauty supply stores and online. Also note which level the dye is.