How are skylab and salyut similar? a-they are both space stations b-they were both missions to the moon c-they were both built during the mid 1980,s d-they are both types of liquid-propelled rockets

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

Which statement is best described as a atom

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.