How are the revolutions of the Moon and Earth alike?

a. Both are produced by gravity
b. Both are revolutions around the Sun
c. Both orbits are the same size
d. Both take the same amount of time
e. Other:

What’s the question

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Must be negative.substance increases