What do bacteria have in common with the cells of other living organisms
A-they have cell membranes
B-they are multi cellular
C- they have the same shape
D-they are made of protein
APEX

What causes the retrograde motion of mars? a.) mars passes earth since it orbits the sun faster b.) mars moves backwards in its orbit for a brief time c.) earth moves slower when it approaches mars in its orbit d.) earth passes mars in its orbit since it orbits the sun faster