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Is it true that ulcers is caused by stress?

Is there any prove that shows there’s existing creatures in other planets in exception of planet earth?

After four months of pregnancy, the ovary can be removed and the pregnancy remains still gets sustained to the end of

What do arthropologist do as professionals

what are the core mission of your organisation

How much blood is in human body?

what does one need to study surgery?

what is human anatomy?

what is being tenacious?

Why do other species go extinct while others survived?