Which rock types tend to weather into rounded shapes

Type the letter that represents the correct location for each particle type below.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?