Question

How various species are classified according to their risk for existence?

Answer 1

Species:

1. Species are a group of populations that share common characteristics and are capable of exchanging genes or interbreeding to produce fertile off-springs.
2. It is considered the unit of classification or taxonomy.

Classification of species according to their risk for existence:

1. Rare species: Species with a less population, evenly distributed and which are not yet endangered or vulnerable but are at risk.
2. Vulnerable: Species that are likely to move into the category of endangered species.
3. Endangered: Species with low population numbers and which are on the verge of extinction. For example, Indian tigers.
4. Extinct: Species that have disappeared from the entire Earth’s surface. For example, the passenger pigeon.