The gravitational pull of the moon on earth 's oceans causes the tides.
Planetary moons are natural satellites.
The gravitational pull of a natural satellite on earth's oceans causes the tides.
The pull of what on the Earth's oceans cause the tides?
Options:
[a] A yellow star
[b] Time and energy
[c] energy of moving objects
[d] A natural satellite
[e] flow of electrons
[f] An artificial satellite
[g] A red star
[h] hydrogen and oxygen