The species that are unable to adapt to environmental changes become extinct. This reduces biodiversity. ... Species that are too closely interbreed can go extinct as mistakes in the DNA accumulate in the population. All forms of extinction cause reductions in the remaining biodiversity .

How does extinction affect the ecosystem?

The loss of a predator can result in what is called a trophic cascade, which is an ecological phenomenon triggered by a predator's extinction that can also impact populations of prey, which can cause dramatic ecosystem and food web changes.

What is extinction and how is it related to biodiversity?

The biodiversity of an area is literally the number of species, both plant and animal, inhabiting the environment being examined. ... When a species is no longer found in a region, it is locally extinct. When it is no longer found anywhere, the species is considered extinct.