when describing the story of a movie/book/play, etc, what tense should be used? present or past tense? thank you

what's the difference between moral and ethical/ morality and ethics? thanks

is the paragraph correct in grammer? The research is proposed to examine the three major questions: first, how globalization and networkization affect Japanese modernity by contradicting, compromising and hybridizing with the local and physical social formation; second, what identity (-ies) the generation has constructed and is constructing as a cultural whole under the process of the realization of westernized modernity in Japan and through what ways they are able to do so; third, what practices and strategies they adopt to resist and adjust to the social and cultural transformation so as to resolve the anxiety of identity. How to correct it? Thanks!

what's the difference between eg.'Japan's economy' and 'Japanese economy?' china's versus chinese UK's versus British, etc thank you

differences between relation and relationships? thanks!

formal Email expressions how do you write a formal email to eg. a college professor who you never met but you are interested in his/her pragramme or something like that. how to introduce youself?/ need to say hi? best wishes/ regards/ thank you for your time/look forward to your reply- which better? please give me some formal and polite expressions you usually use. Thank you!

sth. is popular with or among a group of people? with or among? thanks

what's the difference bewteen "each another" and "one another"?