Biology

What family do dolphins, porpoises and whales belong to?

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What is the fold of tissue that surrounds a mollusk's soft body?
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Which term refers to the presence of or requirement for oxygen?
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Which of these is a renewable energy and fuel source?
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Where does the Krebs Cycle occur in humans?
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What are the gaps between nerve cells called?
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Which of these is part of an onion plant?
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In addition to mucus, what helps your nose filter out germs and dirt?
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Which of the following correctly names the top layer of the rain forest?
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