Which is NOT a characteristic of all vertebrates?
a backbone
an exoskeleton
paired appe...
Biology, 30.07.2021 01:00 Luciano3202
Which is NOT a characteristic of all vertebrates?
a backbone
an exoskeleton
paired appendages
a well-developed brain protected by a skull
Answers: 2
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Why does bubbling occur when vinegar mixed with baking soda
Answers: 1
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Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.
Answers: 1
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If an organ has six haploid chromosomes,how many chromosomes are present. 6 12
Answers: 1
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Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above
Answers: 1
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