unistUndergraduate School Admissions

6. Copies of both parents' passports (or other official documents indicating parents' Nationality)

My question: My mom is a widow and there is an official document about it. She is Mongolian, it's on the passport. On my birth certificate, there is only my mom's name. My birth dad is Mongolian too, but there is no such information in "Mongolian Archive".

So in this situation, can I send my "REQUIRED DOCUMENTS" without my father's passport copy?
and can I send my mother's passport copy without translate

7. Certificate of facts concerning the entry and exit of the applicant
i never exit or entry from Mongollia..
My question: Where Can I find this certificate?

8. Official document demonstrating parent-child relationship between the applicant and his/her parents

My question 1:Can my birth certificate demonstrate parent-child relationship between the applicant and his/her parents?
My question 2:My mom is a widow. My birth certificate certifies that me and my mom has a parent-child relationship. But there is no information about my father on my birth certificate.

-So will it be approved by UNIST, if I only send the official document demonstrating parent-child relationship between me and my mom?