12. There are different classes of vertebrates. Some are warm-blooded and others are cold blooded. Which of the following is true?
A reptiles & birds: warm-blooded
B: fish & amphibians: cold-blooded
C: fish & mammals: warm-blooded
D: reptiles & mammals: cold blooded
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Answer:
There are different classes of vertebrates. Some are warm-blooded and others are cold blooded. Which of the following is true?
D: reptiles & mammals: cold blooded
Explanation:
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12. There are different classes of vertebrates. Some are warm-blooded and others are cold blooded. Which of the following is true?
A reptiles & birds: warm-blooded
B: fish & amphibians: cold-blooded
C: fish & mammals: warm-blooded
D: reptiles & mammals: cold blooded