What Is the Main Source of Energy?

Everything that underpends a nation's standard of living comes from the primary set. In cold, temperate countries in which most of to day's loal north lies, you have only one crop producible in the whole year. The endowment of resources from the prami sectore in the cold temperede countries was in the past, and remains to day, extremely poor. This is not something, this is a material reality which is not mentioned in any book at all. Not a single bookad ti pay you a reward if you can find me a siats and s and histories are the subjects i'm talking about.