When a hummingbird or a hawk moth sups on the sweet nectar of a wild tobacco plant, they're not just getting a tasty meal in exchange for their services in spreading the plant's pollen. Instead, a new study shows that the nectar
When a hummingbird or a hawk moth sups on the sweet nectar of a wild tobacco plant, they're not just getting a tasty meal in exchange for their services in spreading the plant's pollen. Instead, a new study shows that the nectar
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