Bacteria  and fungi break down  the dead and decaying matter into ________.

The ultimate source of energy on earth is _______.

Burning of fossil fuels release ________ to the air.

The malaria preventive medicine _________ is made from cinchona plant.

The process of transfer of energy through a food  chain is called ______.

Animals that eats only plants are called __________.

_________ is known as the 'lungs of the planet'.

Plants use solar energy and convert it into ______.

Which plant is used as medicine for skin disease throughout the world? 

Carnivorous  that  eat on dead animals are known as __________.