Experts fear without conservation efforts and endangered species could disappear from the wild by 2022 just 100 years ago there were at least 100,000 of those endangered species by 2010 the estimated world population of this endangered species was 1900 this bar graph shows the estimated world population of this endangered species for selected years from 1973 2010 also shown as a polynomial function with this graph that model of the data uses information to complete parts a through c