Bees come in a variety of colors, shapes and sizes, but what critical role does this diversity play?

Bees come in a variety of colors, shapes and sizes. This diversity plays a critical role in the health of flowers and farms. Scientists call it the "insurance effect," a great variety of bees working together to pollinate specific plants. Learn more on NSF's "The Discovery Files."This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video