How does the sun produce the aurora on earth? how is the magnetic field of the sun related to sunspots?

The total fertility rate is a measure of the number of children that would be born if all women lived to the life expectancy age forthe given country in which they live.

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

What is the term for a government where power is carefully divided between a central government and several regional or provincial governments? a.) unified or central government b.) federal government c.) confederate government d.) republican government