Describe what happens when a keystone species is removed from an ecosystem

Answer;

Key stones are very important in an ecosystem. Therefore; the balance in the ecosystem is ruined and other organisms are threatened to the point if extinction.

Explanation;

-A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.  

 -Keystone species have low functional redundancy. This means that if the species were to disappear from the ecosystem, no other species would be able to fill its ecological niche. The ecosystem would be forced to radically change, allowing new and possibly invasive species to populate the habitat.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high