C. Planets can move at a varying speed due to forces exerted in space.
The mass of a substance per unit volume is the substance's density.
D = m/v.
Answer:
C. If a solar cell breaks, it releases chemicals and can harm humans.
Explanation:
Hope this helped! :)
its volume this is the answer because the mercury will turn into gas. gas has more volume because it takes up more space as it spreads.
