The symbol for USD can be written $. The Canadian Dollar is divided into 100 cents. The United States Dollar is divided into 100 cents. The exchange rate for the Canadian Dollar was last updated on October 13, 2015 from The International Monetary Fund.
Although brain development is subject to significant individual variation, most experts suggest that the brain is fully developed by age 25.
Images of Brain Development in Healthy Children and Teens (Ages 5-20) The brain continues to develop through early adulthood. Mature brain regions at each developmental stage are indicated in blue. The prefrontal cortex (red circles), which governs judgment and self-control, is the last part of the brain to mature.