Which scientist suggested that the sun was at the center of the solar system ?

a) galileo
b) copernicus
c) newton
d) ptolemy

i need answers asap

1) the french and indian war was a smaller war that was a part of what larger european war? 2) what was the first direct tax placed on the colonies by the british government? 3) how did the stamp act affect the prices of goods? 4) what happened to the stamp act as a result of colonist protest, boycotts, and the stamp act congress?

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?

:) during the cold war, people were afraid of communists, both outside and inside the united states. the red scare and mccarthyism that grew out of these fears were damaging to the american way of life. during the mccarthy years, many of the freedoms guaranteed in the bill of rights were limited. write a paragraph explaining what lessons can be learned from the mccarthy era about what u.s. citizens need to protect in order to preserve the democratic political system and the american way of life.