Bees contribute to the pollination of plants in nature by transferring pollen from the male part of a flower to the female part, which allows plants to reproduce and produce fruits and seeds. Bees are attracted to flowers by their colors and scents, and as they collect nectar for food, pollen sticks to their bodies and is transferred between flowers as they visit them. This pollination process is essential for the reproduction of many plant species and helps in the production of fruits and seeds that are important for ecosystems and food supply.