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30 questions
What is one characteristic that mammals share with birds?
endothermy
cold blooded
feathers
3 chambered heart
What part of the spine is the line pointing to?
cervical
thorastic
lumbar
coccygeal
What part of the spine is the line pointing to?
cervical
thorastic
lumbar
coccygeal
The main artery in the heart is the
aorta
vena cava
pulmonary artery
pulmonary flow
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