Animals dependent on particular habitats are unable to survive when these places vanish. There are many causes of habitat destruction, including logging, mining, oil drilling and the clearing of land for human residence. According to the United Nations, half the world’s tropical forests have been cleared or degraded as a result of human activities and/or environmental disasters, and most of this has happened in the last few decades. Habitat loss is not limited to tropical forests; it also occurs in other vulnerable ecosystems such as wetlands, prairies, deserts, coastal regions and coral reef. This process of destruction is threatening to animals, plants and humans alike.