Answer:
1) Some of the Greek Gods and Goddesses were Zeus, Poseidon, Hades, Athena, Artemis, and etc.
It was said to be that each one had a different power and control over something, like Zeus is the God of skies and thunder and Artemis is the Goddess of wilderness and nature
2) The Greeks held festivals to honor their gods. Most of the time each festival would include a parade to a temple, then a sacrifice an animal of the same sex as the god being worshiped and then have a feast. They held sporting events, like the ancient Greek Olympics, to honor their gods.
3) Some Greek philosophers were Plato, Aristotle, Homer, Socrates, and etc. Socratic philosophers established four schools of philosophy: Cynicism, Skepticism, Epicureanism, and Stoicism. The Post-Socratic philosophers focused their attention on the individual rather than on communal issues such as politics.