Questions

The study or scientific study of the structure, development, and abnormalities of the teeth is called Odontology. The science that studies teeth and their surrounding tissues, especially the prevention and cure of their diseases is called Dentology.
 

Each year, the World Meteorological Organisation (WMO), its members and the worldwide meteorological community around the world celebrate World Meteorological Day on 23rd March around a chosen theme. And this year the theme is "Understanding the cloud".

The largest district in Bangladesh is Rangamati. And smallest district is Narayangunj.

A Book always has Pages. Without pages it can't be called as a book. A book can be either with or without preface, text or index but it can't be without a page.

Hence, A Book always has page.

Assassins (from Hashishin)

Light travels fastest in Vacuum. The fastest thing in the whole universe is the speed of light in a vacuum like outer space. It is about 2.99 x 10⁸ m/s. 

The current infection control guidelines from the CDC (The Centers for Disease Control and Prevention) are called Standard or Universal Precautions.