Answer:
1) A cardiovascular system is an organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes.
2) "Capillaries connect the arteries to veins. The arteries deliver the oxygen-rich blood to the capillaries, where the actual exchange of oxygen and carbon dioxide occurs. The capillaries then deliver the waste-rich blood to the veins for transport back to the lungs and heart. Veins carry the blood back to the heart."
3) A heart attack is a blockage of blood flow to the heart muscle.
 
        
             
        
        
        
Select the correct answer.
Read this sentence:
A disruption of the Federal Union, heretofore only menaced, is now formidably attempted.
What is meant by "a disruption of the Federal Union" in this sentence?
A. 
a joining of the northern states with the states that had seceded
B. 
an attempt by the southern states to form their own government
C. 
an interruption in the arguments between the North and the South
D. 
secession, or the breaking away of southern states from the Answer:
Explanation:
 
        
             
        
        
        
Answer: Chronological order.
Chronological order means describing the events in their order of occurrence in time. In this case, "How to jump start a car battery" describes a process that has several steps. As it is very complex, the best way to write about this process is chronologically. This would allow the readers to perform the actions as they read along, and would decrease their chances of making a mistake.
 
        
             
        
        
        
I don’t see any incorrectly used words, it’s just a more basic sentence.