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Approximately how many species of organisms are currently known and described on Earth?
A17–18 million
B1.7–1.8 million
C170–180 million
D170–180 thousand
Answer & Solution
Correct answer: B. 1.7–1.8 million
NCERT states 1.7–1.8 million species have been identified and described. The actual species count on Earth is estimated to be much higher; new species are continuously being discovered.
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