"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
Let's just do what is right for the American people. And those of us who are involved in politics and government know that our responsibility is to the American people, that we have a responsibility to find our common ground, to seek it and to find it.
Don't confuse hypothesis and theory. The former is a possible explanation the latter, the correct one. The establishment of theory is the very purpose of science.