Biology

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

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What substance in your ears helps keep germs and dirt out?
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What are some plant leaves connected to the stem with?
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What is the condition called when the red blood cells are misshapen?
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Which of the following animals live in large groups for protection?
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What takes up 50-70 percent of a whale's weight?
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The definition of "large group aquatic plants" best fits what science term?
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Which of these is not an insect?
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What is a loss of water called?
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