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There is a mutualistic relationship between flowers and their pollunators. Flowers that attract bees generally have showy petals and fragrant nectar, while those that depend on flies smell like rotten meat. Species that are pollinated by bats or moths are obligated to bloom at night. Hummingbirds are attracted to red (or sometimes yellow) flowers with long tubular necks. The latter relationship has one further quirk; mites parasitic on the plants lurk in the flower's corolla waiting for a passing bird to probe its depths. When it does, they dash up the hummer's bill and into its nostrils. Can you theorize what the purpose is of this bizarre behavior?
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