Biology

What substance is produced by flowers and sometimes causes hay fever?

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What part of the plant gets water and nutrients to the rest of the plant?
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What is the largest-blooming single flower in the world?
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Which animal has the fastest metabolism?
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Which is a change in the environment that brings a response?
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Which of the following animals might a heron eat?
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What animal has the biggest and heaviest brain among all animals?
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From what tree did aspirin originally derive?
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What embryological experiment was performed by Hilde Proescholdt?
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