essential oils for insect bites 3. The role of securities investment Interest rates are an important tool for regulating monetary policy, and they are also used to control economic growth, such as investment, inflation and unemployment. Reasonable interest rate plays an important role in the economic leverage of social credit and interest rate. The investment quantity is the decreasing function of interest rate, saving is the increment function of interest rate, and the change of interest rate depends on the equilibrium point of investment quantity and saving amount. Keynes's theory of money supply and demand decided that interest rates were a monetary factor rather than an actual factor. (3) monetary benefits -- increase the monetary value of assets. There are both measurable and unquantifiable benefits in these three different forms of income. Among them: mental income is too strong to measure, monetary gain is easy to measure because of the static concept of value change. Economists, therefore, focus only on actual earnings. One of the initial requirements will probably be that you are a UK resident and with regards to the type of bank account you are wanting to open, you may have to be over 18 years old. However, in case you are under this age you will probably find there are additional facilities available which can be designed designed for the needs you have. In any case, most providers may have several options you might want to check out before you decide with a final product. The independent of interest is of positive significance to show the active role of the fund users in the reproduction process. We should improve the market supervision system of administrative law enforcement, industry self-discipline, public opinion supervision and mass participation. Propagating the value proposition of the public chain to new participants - redefining "profit" to cover economic and social value.