Endangered Species: An Overview The Earth is home to countless Species of plants and animals, each playing a vital role in our ecosystem. However, due to various human activities such as deforestation, pollution, and climate change, numerous species are now facing the threat of extinction. These species are known as Endangered Species and their decline is a major concern for scientists and conservationists worldwide. What are Endangered Species? Endangered species are those that are at risk of becoming extinct in the near future.