Scientists really don't know why kidney stones form in some people and not in others. Over 10 percent of all men and five percent of all women experience the pain of a kidney stone during their lifetime.
Kidney stones tend ...
Ethnic groups in the Philippines are classified according to certain physical, cultural, linguistic, religious and geographic criteria.
A. According to distinctive physical traits
The Philippine educational system is an organized bureaucracy which provides formal and non-formal education. The three academic levels of formal schooling are the elementary or primary, secondary and tertiary.
The first level ...
