2. Mrs. De Chavez used the chart which she bought from the local​

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?

What impact does geography have on where people live in brazil?

Why would it be hard to live in a city state