The process of transforming of water vapor into water and ice is called 

The half of the surface of the Earth always receives

Which one of the following is the quantity of energy? 

The energy emitted constantly by the Sun is called

Which one of the following is a inexhaustible?

The amount of water vapor present in the air is called

Transfer of heat by circulatory movements are called

The Sun continuously radiates heat and light energy in all the directions are known as

Which is the main source of heat and light for the Earth?

The process of transformation of liquid into gaseous form is called