Bazı hastalıklara kusurlu bir gen tarafından sebep olunmaktadır.
- Some diseases are caused by a defective gene.
Bu kazaya neyin sebep olduğu tam bir sır.
- It is a complete mystery what caused the accident.
... but not limited to airplane crashes in Iran that are said to have been caused by old planes ...
... have already caused the extinction of many species. The question is, is that going ...