In what year did china introduce its one child policy

Many rivers in central asia come from

What must happen for new french words to be published in official dictionaries? a. they must be approved by the french academy b. they must be voted on by the people of france c. they must be used by famous french writers d. they must be used by philosophers a. they must be approved by the french academy

What scientist first formally propose that the position of earths continents change over time the continental drift hypothesis