Successful attempts to make the internal combustion engine more efficient in the 19th century resulted in an increase in the demand for
a) coal
b) iron ore
c) petroleum
d) arable land

How did kenya gain its idpendence in 1963

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?

Stie cineva cati ani poti fii director de sa imi specificati si legea va rog