Q: Answer the question

The change in the use of one model of the solar system to the use of another model resulted in major changes in science and society. Which two scientists produced the earlier and later models, respectively?

A: Ptolemy and Copernicus


Q: Answer the question

Which characteristic below most likely accounts for our limited knowledge of galaxies?

A: their great distance from Earth


Q: Answer the question

Which two processes could result in the formation of high mountains with well-rounded peaks?

A:
collision of crustal plates and erosion