How many times can a senator be re-elected

The continents of africa and south america used to "fit together” like puzzle pieces. about how far back in time would you have to go to find the formation of the atlantic ocean? 600 million years 430 million years 200 million years 90 million years

Why did working women earn one-thrid to one-half as much as men

An refers to a specific factor that has a range of possible values