It must be observable. People who agree with the Big Bang theory say that things such as stars and galaxies moving away from a center is proof. However, no one can test the Big Bang.
What are your answer choices
Answer:
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Explanation:
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Answer: Pulmonary veins
Explanation:
Highly oxygenated blood returning from the pulmonary capillaries in the lungs passes through a series of vessels that join together to form the pulmonary veins—the only post-natal veins in the body that carry highly oxygenated blood. The pulmonary veins conduct blood into the left atrium, which pumps the blood into the left ventricle, which in turn pumps oxygenated blood into the aorta and on to the many branches of the systemic circuit.
In this case, oxygen and nutrients exit the systemic capillaries to be used by the cells in their metabolic processes, and carbon dioxide and waste products will enter the blood.
Answer:
King George II stood up at the performance of George Frederick Handel's “Hallelujah chorus” on March 23, 1743. No one knows for sure why he stood.