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 2 is the second darkest hair color level. It is usually used to describe a natural black, and is the natural color of most people who have naturally black hair along with Level 3, soft/light black hair. Refer to the hair color chart. Most drugstore black hair shades are Level 2, medium black. Level 2 hair color is best suited to people whose natural hair color is between Level 2 and Level 3.5.
1 How To Mix Your Hair Color At Home. 2  The secret to mixing spectacular hair color is to understand that a higher numbered hair color will lighten the formula while a lower numbered hair color will add depth to the formula. 20 volume peroxide is the preferred developer-use of a stronger (or higher volume) peroxide increases the chance of brassiness.