Answer: The magnetic field of Earth is caused by currents of electricity that flow in the molten core. These currents are hundreds of miles wide and flow at thousands of miles per hour as the earth rotates. The powerful magnetic field passes out through the core of the earth, passes through the crust and enters space.
Which statement best describes how investment in the stock market during the mid-to-late 1920s contributed to the Great Depression? People were unable to repay the loans used to purchase stocks.
