Ima

1. Meaning:Variation means small difference in a species.

   
   

2. Example: All humans are the same species, but we are differ in skin type, hair colour, height etc.

   
   

3. Cause: Variation happens because of the genes.

   
   

4. Types:

   1. Inherited variantion

   2. Environmental Variation

      
      

5. Importance of Variations

   1. Helps living things adapt

   2. Some variation helps organisms survive better.

   3. Leads to evolution over many generation.

Examples: 

Dogs - Different colour and size

Plants - Different number of petals, flowers etc

People - Different blood groups, skin tone, hair strucutre.