Misc: peat, lignite and bituminous are types of ______?

Questions

on may 28, 1934, the ______ quintuplets were born.?

who was the afro-american woman who refused to give up her seat in a bus in alabama in 1955?

if you have to pay your taxi fare in zloty, which country are you probably in?

who created the idea of using atomic numbers for elemental identification?

who developed the first successful totally artificial heart?