2011年12月12日星期一


SURVIVAL OF SPECIES

1. A species is a group of similar living things that can breed among themselves.

2. Cows, tigers, elephants and birds are examples of different species of animals.

3. Survival of a species is the ability of the species to survive on the Earth.

4. Living thins reproduce to ensure the survival of their species.

5. Living things have their own ways of ensuring the survival of their species.

6. Living things that are unable to ensure the survival of their species will become extinct.


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