What does central bank do to conserve foreing exchange reserves?

Does globalization promote languages and cultures? What were two of the most important goods traded by Ghana? Ang tula ni corazon de jesus na pinamagatang isang punong kahoy? What does unemployment lead to? What does Wales import? During the Industrial Revolution the expansion of free enterprise economic principles resulted in what? Why some of final good and services are not included in GDP? What is the elasticity of supply for baseballcards that were printed 25years ago? What are other names for traditional economy? What is the difference between BP to OPEC? Does low aggregate demand make the economy weak? What is a tool or machine that a company can use to produce goods and services? How much did a average house cost in 2004? How countries add values to their primary production? What economic system is based upon Adam smiths ideas of supply and demand competition and the principles of hard work granting success? What term best characterizes the American economic system? What does good scholarship ultimately drives fraud from the marketplace mean? How many us dollars is in 300 Mexican pesos? How can you generate prices for goods and services? What was the value of one Australian dollar in 1967 compared to one dollar in 2011?

What does central bank do to conserve foreing exchange reserves?