Breathing begins with inhalation when the contraction of the diaphragm flattens on contraction, pulling the lungs down. The contraction of these muscles increases the volume of the lungs. This reduces the air pressure in the lung to below that of the external air. This pressure difference forces air to move into the lungs where gas exchange occurs. The relaxation of the diaphragm and intercostals reduces the volume of the lungs, which then increases the air pressure inside the lung to that above the external air. This forces air out of the lungs. The cycle goes on and on. Hope this helped!
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<u>Black figure</u> painting
Explanation:
Black-figure is a style in which black figures are drawn on a red background. It originated in Corinth during the 7th century BC, spread to other cities and regions, including Sparta, and reached Attica a generation later. It was especially common between the 7th and 5th centuries BC, although there are specimens dating as late as the 2nd century BC.
Answer:
The Constitution explicitly assigns the president the power to sign or veto legislation, command the armed forces, ask for the written opinion of their Cabinet, convene or adjourn Congress, grant reprieves and pardons, and receive ambassadors.
Answer:
The framers of the Constitution wanted to create a third branch of the government, equal to the others. This is the federal judiciary. At the same time, they feared overreaching federal power, so they limited the power, or jurisdiction, of the federal courts. This has led to a dual court system, with each having its own key role.
Explanation:
