Fill in the Blanks What?Online version According to the text solve the following fill in the blanks exercise by clicking on the words on the right. by Edgar Romero 1 Endangered change and or a are of threatened as risk Endangered species those considered to be at of extinction , meaning that there are so few left of their kind that they could disappear from the planet altogether . species are by factors such habitat loss , hunting , disease and climate , and usually , endangered species , have a declining population a very limited range . Shockingly , current estimates suggest that third of the world's amphibians , a quarter all mammals one in eight birds are endangered .