ANIMAL POPULATION

https://www.worldwildlife.org/species/directory?direction=desc&sort=extinction_status
2. https://www.iucnredlist.org/resources/summary-statistics
3. https://archive.org/details/worldatlasofbiod02groo/page/44/mode/2up
4. https://ourworldindata.org/life-on-earth
5. https://www.worldatlas.com/articles/most-populous-mammals-on-earth.html
6.https://www.npr.org/sections/thetwo-way/2011/11/03/141946751/along-with-humans-who-else-is-in-the-7-billion-club
7. https://onekindplanet.org/top-10/top-10-worlds-most-endangered-animals/
8. https://www.getaway.co.za/travel-news/10-near-extinct-species/
9. https://www.wwf.org.uk/learn/fascinating-facts/amur-leopards
10. https://www.wwf.org.uk/learn/fascinating-facts/rhinos
11. https://www.wonderopolis.org/wonder/how-many-animals-are-there-in-the-world