Medium
At the current stage,the number of species known and described in the world is in the range of ...... .
- A$1.7$ to $1.8$ lakh
- B$1.7$ to $1.8$ crore
- C$1.7$ to $1.8$ billion
- D$1.7$ to $1.8$ million
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According to Robert May,the global species diversity is about:
How do scientists extrapolate the total number of species on Earth?
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View SolutionMatch the columns regarding the global species diversity estimates:
Column-$I$ Column-$II$ $1$. Fishes $a. 3,00,000$ $2$. Orchids $b. 28,000$ $3$. Beetles $c. 20,000$
| Column-$I$ | Column-$II$ |
|---|---|
| $1$. Fishes | $a. 3,00,000$ |
| $2$. Orchids | $b. 28,000$ |
| $3$. Beetles | $c. 20,000$ |
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View SolutionWhat is the approximate ratio of animal to plant species in our country?
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