Exchange rate. This is the amount of foreign currency that will be generated for every dollar you send. For example, a service might have a rate of 12.48 Mexican pesos per dollar. So if you send $200, it'll convert to 2,496 pesos.
Selenium is a nutrient that the body needs to stay healthy. Selenium is important for reproduction, thyroid gland function, DNA production, and protecting the body from damage caused by free radicals and from infection.
Some animal research indicates that taking copper supplements may help slow or prevent arthritis, but more study is needed to prove this benefit occurs in humans. Selenium is a trace mineral found in tuna, whole grains, chicken, Brazil nuts and sunflower seeds.