One The joiner that shows a choice between coordinate ideas is "therefore"
Example :
For me, ever person in education field is a hero. Therefore, Mr. Hemming is one of my hero because he is my math teacher.
Hope this helps
Answer:
C."Marie spent many hours boiling down pitchblende in enormous pots...gasping and coughing from the fumes."
Students should be insisted moral lessons in school. This is because nowadays people do not look a bookish knowledge a for a job, they look at their personality. No only for job, in their personal life they need to learn this moral education for the better of their lifestyle. More moral educated people is equal to better human society.
Nowadays many schools promote the moral education. This will lead to a better Society with peace and understand among them.
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