Wednesday, 6 April 2011
Monday, 28 March 2011
Animals can be grouped in many ways.
Animals can be grouped in many ways according to their external features.
A group of animals can be divided again into different groups.
For example, the animals below are grouped into one group because each of them has four legs and a tail.
A group of animals can be divided again into different groups.
For example, the animals below are grouped into one group because each of them has four legs and a tail.
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