It’s often said that extinction is the rule, rather than the exception—after all, 99.9 percent of all species that have ever existed on Earth have gone extinct.
As of 2010, there were approximately 400,000 types of flowering plant species in the world, known that is.
According to Smithsonian, there are 21 recognised human species. But other papers list only 10-12 species as humans. Some lists don’t include Denisovans while some don’t have Homo naledi, a hobbit-sized human species discovered in Indonesian caves.
According to many reports there are roughly 400,000 different species of flowers found on the planet.