Unsurprisingly, many flowers emit scents to aid reproduction. Some flowering plants are generalists and use their odors to entice a host of insects and birds to fertilize their flowers. Others specialize, releasing scents that only appeal to a particular insect. The Soaptree yucca, for example, emits an aroma that attracts a single, aptly named species of yucca moth. As pollinators travel from flower to flower, they collect and deposit pollen, fertilizing the plants.
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