Endangered example sentences

If species of plants and animals become endangered, they cause degradation in the environment, which may threaten human being's own existence.The IUCN publishes information about endangered species world-wide as the Red List of threatened species.However, recently a study by the World Wide Fund for Nature (WWF) found that Ganga is one of the ten most endangered rivers in the world.It has resulted in the rendering of certain types of organisms as endangered category.Many species have become vulnerable or endangered and some are on the verge of extinction.