Game screen showing the Console Command line. Reference set. Console Commands are a debugging tool available to PC players, adding a wide range of functionality to the game. On American English keyboards, the tilde key (~) will toggle the console screen, but on British English keyboards, that key is the grave key ( ` ).
The constant stream of light from the sun is the only source of energy that comes from outside the Earth, and its action creates almost all other energy forms available on the planet.
, which is the ultimate source of all food. The energy in fossil fuels (e.g., coal and oil) and other organic fuels (e.g., wood) is derived from solar energy. Difficulties with these fuels have led to the invention of devices that directly convert solar energy into usable forms of energy, such as electricity.