Answer: Keystone species are species that is so important in community that its removal can dismantle a food web.
Step-by-step explanation:
A keystone species are important species that have high impact in the ecosystem and their removal can dismantle a food web. They important for the overall structure and function of the ecosystem. Keystone species help to define an ecosystem and their removal can cause the ecosystem to cease altogether and cause a rapid change, allowing new invasive species to dorminat the habitat. Keystones species are dorminat predators, whose removal can allow the prey population to increase and its will alter and decrease the overall diversity. Example of keystone species are coral or beaver, jaguar e.t.c