If the universe were contracting what would happen to the light from the other galaxy as it reached earth

a it would dimmer
b it would be brighter
c it would be blue shift
d it would be red shifted

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

In general metals get as you move from left to right across the periodic table.

Astudent uses universal ph paper to find the ph of three solutions . solution a has a ph of 5 solution b has a ph of 11 and solution c has a ph of 7 identify which solution is acidic which solution is neutral and which solution is basic