Coextinction. When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. This is called co-extinction. Analogy rivet popper hypothesis, used by Paul Ehrlich, indicates the importance of each species to the ecosystem. In a plane (ecosystem) all parts are joined together using thousands of rivets (species).
The extinction of a species affects the normal functioning of ecosystem, like removal of rivets of a plane. Damage of more number of species affects the ecosystem dangerously.
