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Biology
What substance is produced by flowers and sometimes causes hay fever?
Biology
What substance is produced by flowers and sometimes causes hay fever?
Leaves
Soil
Honey
Pollen
More Questions from Biology
In addition to mucus, what helps your nose filter out germs and dirt?
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Which rays of the sun can damage the skin?
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What is another name for growth of living organisms?
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The brain is divided into how many lobes?
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What kind of tree loses all its leaves during a dormant period like winter?
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What part of the human skeleton protects the brain?
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What is a shark's skeleton made of?
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Which is the sheet-like muscle at the bottom of a human chest?
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