<span>Myocardium
The heart has four chambers, four valves. It is composed of cardiac muscles which all in all pumps blood throughout the human body through the blood vessels. When something gets injured around the heart, well it will automatically, in high possibility stop functioning. Take not of the valves and the most important is the sinoatrial node which is the pace maker of the heart. It is what triggers the heart to pump itself and the valves then function and the blood travels and then gets cleansed out of carbon dioxide in the alveoli.<span> </span></span>
D, I believe the answer is D
Answer: The correct answer is : b. served in the military and worked in war production.
Explanation: During the Second World War the government of the United States needed the help of the Navajo Indians. Given the need to create a secret military code that was not deciphered by the Japanese, the language of the Navajo Indians was used and code words were used since they did not have in their language many terms used in the war. 200 Navajo Indians were enlisted to act as key announcers.
TRUE
The statement:
Chaucer was an important fourteenth century poet who helped shape what we think of as Middle English.
