Bees contribute to pollination in ecosystems by transferring pollen from the male part of a flower to the female part, which leads to fertilization and the production of seeds and fruits. This process is essential for the reproduction of flowering plants, as it ensures genetic diversity and the survival of many plant species. Bees are efficient pollinators due to their hairy bodies and foraging behavior, which allows them to visit a large number of flowers in search of nectar and pollen.