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...
People with large amounts of pheomelanin have red hair, which can range from pale red (strawberry blond) to bright red to reddish brown. Most studies divide hair color into a small number of categories, such as blond, red, and brown.