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I need a question starting from the word why relating to industry
Questions relating to 'demography'; the statistical study of human populations.
Try asking them something relating to have and has.
No, the word "questions" does not have an apostrophe. It is a plural noun.
catechetical |ˌkatəˈketikəl|
adjective
of or relating to religious instruction given to a person in preparation for Christian baptism or confirmation.
• of or relating to religious teaching by means of questions and answers.