yes it can
WikiAnswers cannot see "this" paragraph so we cannot answer the question. This is a question and answer site, so you have to include everything in the question and a whole paragraph is too long to include.
Yes, you can end a paragraph with a question to engage the reader and prompt further thought.
A P.E.A.K paragraph is a paragraph that contains:P=PointE=EvidenceA=AnalysisK=Keep going back to the question.
This is not a question.
The main idea of a science experiment could be a question, but the main idea of a paragraph should be a statement. You can generally form a question into a statement to use for your paragraph.
A polygon presumably
At the end of a paragraph
A rhetorical question.
D. introductory paragraph; thesis statement
How do you feel about illegal immigrants? Answer the question in paragraph form
Yes this is acceptable providing you finished with a question.
You would need to post the paragraph as a question on this site, and a translator can answer you. If the paragraph is too long, you will need to find an offline translator.