Question

9 warm blooded vertebrates that produce milk for their young are known as _________.
o autotrophs
o mammals
o reptiles
o amphibians
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Explanation:

Mammals are warm - blooded vertebrates that have mammary glands to produce milk for their young. Autotrophs are organisms that produce their own food through photosynthesis or chemosynthesis. Reptiles are cold - blooded, and amphibians have a life cycle involving both aquatic and terrestrial stages and do not produce milk for their young.

Answer:

B. mammals