Energy from a source that is not depleted when used, such as wind or solar power.
Thats because on the side of the moon that's facing the Earth, gravity is more powerful on this side, thus, the moon's gravity pulls the ocean's water in this direction, which is called a bulge. On the other side of the moon, inertia is the one that's powerful, this also creates a bulge. These two forces creating bulges at the same time is what causes multiple high tides.
Hope this helps!
-Daisuke
Differing physical forces is the correct answer :)
<h3><em>All Tutsi men, women and children were no longer citizens of a nation but cockroaches</em></h3><h3><em></em></h3><h3><em></em></h3><h3><em></em></h3><h3><em></em></h3><h3><em>In the years leading up to the 1994 Genocide against the Tutsi the government used all its propaganda machinery to spread hatred of the Tutsi.</em></h3>
