Question

Number of animal species that are known and described in this living world is around

1) one lakh species

2) one million species

3) one billion species

4) one trillion species​

Answer 1

Answer:

The natural world contains about 8.7 million species, according to a new estimate described by scientists as the most accurate ever. But the vast majority have not been identified - and cataloguing them all could take more than 1,000 years.

Answer 2

Answer:

3) one billion species

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