The molten material of the earth began to reorganize itself into layers called  

The surface of the earth we live is known as 

The scientist who proposed the theory of evolution

A vent or opening in the Earth's surface to let out the hot , molten liquid ,gases, and pieces of rock with pressure is called

Gondwanaland was named by 

Molten rock below the surface  of the earth is called  

As we go deep into the interior of the earth, the temperature increases but as we go deep into water, temperature _______.

 Which among the following is a unit of distance for expressing astronomical distances?

In the outer core of the earth, iron exists in a _________ condition .

First life originated from