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Biology, 08.07.2019 11:00 helphelp81
Need ! what is a defining feature of mammals that is not present in most other vertebrates? a. mammals have a nervous system with a spinal cord. b. mammals reproduce through internal fertilization. c. mammals maintain a constant body temperature. d. mammals can produce milk for their offspring.
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Need ! what is a defining feature of mammals that is not present in most other vertebrates? a. mam...
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