PLEASE HELP! fill in the blanks
1) __ species - one that is at serious risk of extinction
2) __ species - one that is likely to become endangered soon through all or part of its range.
3) __ species - these have a variety of roles (niches) in an ecosystem as they eat a wide variety of foods, live in a wide range of environments, and are therefore less prone to extinction. Examples: __ and __
4) __ species. - these have specialized diets, live in only a few types of habitats and are therefore more prone to extinction, for example: __
5) __ species - found only in one area and nowhere else in the world.