Biology

In which fluid-filled cavity do organs develop in organisms such as earthworms?

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Which of the following is not a type of blood group?
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What does an ornithologist study?
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What is behavior taught by the parent or other adults of the species called?
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What common food is actually a modified root?
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What group of animals has hollow bodies and stinging cells?
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What type of creature generally lives on land but starts life in the water?
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Which of these animals is closely related to a lobster?
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What is a loss of water called?
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