Which statement is true?
A) Biologists have discovered almost all of the species that inhabit Earth.
B) Biologists have discovered about three-quarters of the species that inhabit Earth.
C) Biologists have discovered about half of the species that inhabit Earth.
D) Biologists have discovered only a small percentage of the species that inhabit Earth.
E) Biologists have discovered a small percentage of the species that inhabit Mars.

Question

Quizplus · Accepted Answer

Biologists have discovered only a small percentage of the species that inhabit Earth. It is estimated that there are between 5-10 million species on Earth, but only around 1.7 million have been described and named so far.

Which Statement Is True