Coal
1)Coal was formed from the remains of vegetation,hence it is called a

2)Coal is primarily made up of carbon and hydrogen.
  

3) is the largest source of fuel used to generate electricity world-wide.

4)Coke is an almost pure form of carbon that is used in the manufacture of steel and extraction of metals.
  

5)Coal is used to make steam for heating.
  

6)The process of conversion of dead vegetation into coal is called____
  

7)___ is a tough porous and black substance, which is produced by destructive distillation of coal.
  

8)The amount of resources in nature that are limited and are exhausted by Human activities are called.

9)Coal is primarily made up of ____
  

10)The method of mining that is used to extract coal deep beneath the surface of the earth is called ___
  

11)Coal is primarily made up of ____
  


  


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