The answer you are looking for is "cardiac sphincter".
Answer:The uniqueness of the data usually means that it is not able to be replicated.
Explanation:
I think I haven't done this in awhile hope it helps.
The <span>political and social underpinnings leading up to the independence of Mexico and Central America reveal a common and ongoing struggle.</span>
It is specifically focused on an argument which defines your goal and the scope of the thesis. Its main purpose is to support and prove your main argument. It's like a person arguing to prove his position which means he is making a claim. If written effectively, a claim statement will keep your readers interested.