There are over 20,000 known bee species worldwide, each adapted to different environments and roles in ecosystems. The most recognized species include the honeybee, known for its social structure and honey production, and the bumblebee, which is larger and often found in cooler climates. Bees play a crucial role in pollination, helping plants reproduce by transferring pollen from one flower to another. This process is vital for the growth of many fruits, vegetables, and nuts, making bees essential for both natural ecosystems and agriculture.