Scientists estimate that about 90 percent of the world's species have been catalogued by humans, and anticipate completing the inventory within the next decade.

Question

Quizplus · Accepted Answer

While it is difficult to determine the exact percentage of species that have been catalogued, most estimates range from 10-20% with new species being discovered regularly. It is unlikely that a complete inventory will be achieved within the next decade.

Scientists Estimate That About 90 Percent of the World's Species