They believed in her just like they believed in all the Gods. She is a Goddess and they knew of her. So naturally they believed in her and offered her the worship and sacrifices that are her due.
The thing that the Greeks believed caused winter is when Demeter, goddess of the harvest, was sad becase Persephone was in the underworld with her husband Lord Hades. Because Demeter was sad, nothing grew and the weather worsened, thus the Greeks had an explanation for winter.
The Greeks never had a story of Demeter's death.
In the ancient past the Greeks believe in what we today call "classic mythology", the Olympians: Hera, Zeus, Poseidon, Demeter, Apollo, Artemis, Dionysus, Aphrodite, Athena, Ares, Hermes, and Hephaestus. As well as others: today, many Greeks believe in God. There is, however, the revival of New Age "pagan" believes.
They believed in her just like they believed in all the Gods. She is a Goddess and they knew of her. So naturally they believed in her and offered her the worship and sacrifices that are her due.
She was the goddess of fertility and harvest .
To explain the seasons.
Demeter is the Greek goddess of agriculture or nature
Plants
Ceres The Romans didn't have a Demeter per say, however they did have the Goddess of Grain and Agriculture, in the same manner as Demeter was for the Greeks.
She is known as Demeter to the Greeks and Ceres to the Romans.
yes/people might still believe in Demeter like people believe in good even though Demeter might just be a myth , and everyone had it's own way of thinking
The ancient Greeks believed that gods and goddesses are immortal; therefore, according to Greek mythology, the goddess Demeter lived forever.