its the circulatory system
Answer:
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Explanation:
Answer: The mechanical advantage of a machine is 4. ... Mechanical advantage MA is the ratio of output (generated by the machine) force to input (applied to the machine) force. So MA = 4 means that for example if you apply 100 N then your machine will multiply that force and generate 400 N.
230 is your anwser! sorry bad english
Answer:
The study of internal structures is called anatomy forexample to study the internal structure of heart
Explanation:
