Pollination occurs when pollen grains are moved between two flowers of the same species by wind or animals. Insects, such as bees and butterflies (also referred to as pollinators) play a major role in this process. The carrying of seed from plant to plant process results in the production of healthy fruit and fertile seeds, allowing plants to reproduce. Without pollination, our food supply, agricultural economies, and landscapes would not exist! In fact, they would collapse!
Source: USDA Forest Service