Ceremonies including took place at the top of aztec pyramids

Ceremonies including human sacrificie took place at the top of aztec pyramids

Explanation:

The sacrifice of humans to the gods was a mission for the Aztecs as people are chosen by their god Huitzilopochtli. The priests kept the losers for the sacrifices, and then the god was pleased. The basis of religious thought and ritual activity came from the idea that a constant relationship of exchange with the supernatural was necessary. By offering to the gods the vital energy necessary to maintain activity, one could continue to receive from him the gifts that allowed human existence, such as light, heat, water, hunting, the products of the earth.

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yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.