What is the Total Number of Earth's Species That Have

Question

What is the total number of Earth's species that have been identified?
A) 10 million species
B) 12 million species
C) 200 million species
D) 1.8 million species

Accepted Answer

The total number of Earth's species that have been identified is approximately 1.8 million species, with many more still waiting to be discovered and classified. Therefore, option D is the correct answer. Options A, B, and C are all far too high and not accurate estimates.