Question

How many species are believed to exist on Earth at present time?

• A. 5,000 to 10,000.
• B. Approximately 100,000.
• C. Approximately 500,000.
• D. Between 5 million and 30 million.

Answer 1

The correct option is D Between 5 million and 30 million.

The total variability of life forms on planet Earth is measured called as global biodiversity which is reported to be between 5 million and 30 million at present scenario.

So, the correct answer is option D.