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junderw2 | 21:04 Mon 20th May 2002 | Animals & Nature
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Why do some flowers close at night while others don't?
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As some rely on pollination by moths and night-time insects (such as evening primrose), whereas others rely on the day-time insects for pollination, like beees and butterflies. It would be in the plants best possible interests to save enery resources by only opening during thier desired time...
12:20 Thu 23rd May 2002

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