Bees are flying insects known for pollination and producing honey and beeswax. There are nearly 20,000 known bee species, including the European honey bee which lives in hexagonal honeycombs in beehives. In beehives there are three types of bees: a queen who lays eggs, workers who are female but infertile, and drones whose sole purpose is to fertilize the queen. Bees gather pollen which they transform into honey and store in honeycombs before humans extract it. Bees are essential to pollination and food production, but many are dying due to parasites, pesticides, and pollution, so conservation efforts are needed.