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The team attached fruit flies fed with nitrogen-15, an isotope that can be used to track changes in nitrogen levels, to the flowering stems of bog-dwelling T. occidentalis plants in British Columbia’s Cypress Provincial Park. Over half of the wildflowers’ nitrogen came from the fruit flies, the team found. Those levels are comparable to known carnivorous plants. What’s more, the wildflowers’ sticky hairs oozed phosphatase, a digestive enzyme that many carnivorous plants secrete to consume prey.