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Bio-Diversity and its Conservation


19. 

The book "on the origin of species by means of natural selection" was written by

Answer : B. Darwin

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20. 

Which one the following is a true statement?

Answer : D. Man appeared 6 million years after dinosaurs were extinct

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21. 

In petrol,lead is not added now a days. This is because

Answer : A. Lead is toxic to our organs.

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22. 

Which of the following are Biotic Components categories?

Answer : D. All the above

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23. 

The path of energy transfer from one organism to another in a single direction is called

Answer : B. Food Chain

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24. 

Which of the following is Food chain in a grassland?

Answer : A. Paddy-> Mouse-> Sanke-> Eagle

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