<span>The three systems interrelate for a complete function of the body. The respiratory and cardiovascular systems work together to perform the gas exchange function. Without gas exchange function, the cells would die, hence, it is crucial for these systems to work together.
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Through respiratory system, the oxygen enters the body and then it is transported as oxyhaemoglobin to the cells with the help of cardiovascular system. The cardiovascular system also performs the work to transport the waste product carbon dioxide to respiratory system, that evacuates it.
Hence, whithout respiratory system, the oxygen could not enter the body and it could not discharge the carbon dioxide waste. Without cardiovascular system, the oxygen and carbon dioxide could not travel the body.
The cardiovascular system relates with digestive system for an optimum heart rate. The digestive system produces nutrients and with help of cardiovascular system transports these nutrients where it is needed. The digestive toxins are also discharged from system with the help of cardiovascular system that transports them to kidneys.
Hence, the healthy equilibrium of human body is reached if all these systems work together in harmony.
The answer is D.
A war in Mexico would fall under northern command. Northern commands was created by secretary of defense Rumsfeld in respond to war on terrorism and national security. It covers Canada, the United States of America, and Mexico.
There would be unlikely that Mexico would pick a war againts U.S.A though
In a direct democracy, every person participates actively in every public decision, instead of relying on elected representatives.
<h3>What is democracy?</h3>
Democracy is a system of government, whereby people exercise power to directly elect representatives from amongst themselves, hence form a government body.
It is otherwise called a system of the government, by the people and for the people.
Learn more about democracy here: brainly.com/question/3710021
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Answer:History continues to prove the wisdom of the Founders' belief in the unity of both political and economic freedom. ... Then, as now, some have wanted government to impose regulations, tariffs, taxes, or other interventions to protect and advantage certain activities and to minimize economic risk.
Explanation:
Freedom itself was important to our country's Founders. Our right to be free was built into the Constitution, especially in the Bill of Rights, which prevented Congress from passing laws that infringe upon our freedoms. ... Because our natural rights come from God, and not from other people, or the government.
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A. They were trying to find a trade route to make trading easier, so they explored a whole lot more.
B. The Colombian Exchange contributed to the rise of slave trade because when they picked up goods, they just piled 100 or so slaves in the bottom deck. Once a few people had some, many others began to want them and supply and demand skyrocketed. It was easy because the slaves had a different skin color and spoke a different language. The Europeans did not see them as people.
