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Uploaded by CBS on Aug 23, 2007
Wyatt Andrews previews tonight's "CBS Evening News," including flooding in the Midwest and Massachusetts' experiment with universal health care. (CBSNews.com)
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Fourth???
zedek3147 3 years ago
How were the jugular veins evolved? did the brain have ample supply of blood and the tissues of the head? before it was evolved enough to work?
when did the pulmonary arterty evolve? what stage? how did the lungs get blood before it evolved?
When did the Brachial Artery evolve, what stage? how did the upper parts get blood pumped to it before it evolved?
StudentatWar 4 years ago
second
bigfaggykitty 4 years ago
first
ucantcme123 4 years ago
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Fourth???
zedek3147 3 years ago
How were the jugular veins evolved? did the brain have ample supply of blood and the tissues of the head? before it was evolved enough to work?
when did the pulmonary arterty evolve? what stage? how did the lungs get blood before it evolved?
When did the Brachial Artery evolve, what stage? how did the upper parts get blood pumped to it before it evolved?
StudentatWar 4 years ago
second
bigfaggykitty 4 years ago
first
ucantcme123 4 years ago