Ottoline Leyser from the University of York says that after a plant is pruned, all the inhibited shoot tips compete with each other to grow.

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On July 10, charges were filed against Scott after receiving tips from the public identifying him as the motorcycle rider in the video.

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After the first "Tips" campaign last year, the number of people calling the quit line increased by 200, 000, Frieden said.

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According to ICE, Montemayor was identified as a suspect through the tattoos and her facial appearance and was arrested less than 10 hours after the appeal for tips.

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