The Variety of Animal Species
An interesting infographic about the amount of species on earth. The total estimate of the this chart puts the number of different species of animals over 6 million. It is also important to remember that this number excludes different plants and single-celled organisms.
Scientists also estimate that out of all of the various species alive today (animals, plants, etc. included) is only 1% of the species that have lived on earth in the past.
Image courtesy of National Geographic