3. how many acts are in a classic hollywood structure film?

The three-act structure is a model used in narrative fiction that divides a story into three parts (acts), often called the Setup, the Confrontation and the Resolution

i think these large heads represent their gods and i do think they were worshiped by the people. if there was only one head and no heads around it i think it would be monotheistic but if there are several heads close to each other it could be polytheistic.