Would best explain your behavior if as you are reading this question you cannot think of the correct term and you say to yourself, "i can't believe i forgot this," when in reality you never knew the answer in the first place.

this question does't support enough resioning to answer.

it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.