Question

Explain, taking one example, the effect of co-extinction on biodiversity.

Answer 1

Co-extinction refers to the loss of species that occurs when other species they depend on become extinct. For example, when a host species becomes extinct, its specific parasites also face extinction because they rely entirely on that host for survival. Another example is the extinction of a plant species that has a unique pollinator; if one goes extinct, the other often follows. This interconnected loss reduces biodiversity because the extinction of one species sets off a chain reaction affecting others linked by ecological relationships. Thus, co-extinction significantly diminishes ecosystem complexity and stability.