Which of the following characteristics do the economies of the united kingdom, germany, and russia have in common? a. they are the world’s three leading economies. b. they are all highly developed economies. c. they all have major issues with corruption. d. they are all mixed economies.

Eastern europe and parts of northern europe have which of the following climates?

All of the following statements about the biosphere are true except: a. light and heat from the sun do not affect the biosphere. b. the biosphere gets resources from earth's crust, hydrosphere and atmosphere. c. like "biology", the name for the biosphere comes from the greek word for life. d. the biosphere includes all living organisms on earth's surface.

Explain the value of statistics and other data to positive economics and to normative economics