Questions

A promise. 

The Promise made to somebody by you can be break but you cannot touch it.

Adam's Bridge is the name of the bridge between India and Sri Lanka. It is also called as Rama Setu or Rama's Bridge.

A trampoline is a sheet or web supported by springs in a metal frame and is used as spring board.

Most of the known extrasolar planets resembles the planet Jupiter in the solar system.

A primary key is a special relational database table column or combination of columns designated to uniquely identify all table records. That is, A primary key is a column or set of columns in a table that uniquely identifies tuples (rows) in that table.

A primary key, also called a Primary Keyword.

Main Features Primary key are ::

It must contain a unique value for each row of data.

It cannot contain null values.

The greatest single drop of the waterfall, Salto Angel of Venezuela, measures 807m and the width at the base is about 150 m. From top to bottom the Angel falls measures 979 m - almost 1 km.

If a micrograph is false-colored, it means that the computer has created the colour for the object since we know that the electron microscopes sees only black and white colours.