Endangered Species In The United States: Chapter Summary

No more extinction There are innumerous plants and animals species live on the earth. Every specie plays an important role in the planet. Unfortunately, many of species have not fared well during past decades suffering from things such as human activities, climate change and the spread of invasive species. An increasing number of species is reported at risk of extinction in United States. Is extinction serious threat? should endangered species be protected? All three sources give the answer that endangered species should be protected. They believe that saving endangered species is the most important thing, which is like saving human beings’ life. First of all, Wagner, Viqi points out that lots of plants and animals are responsible for a variety of useful medication. His perspective on the issue is medical. According to “Endangered Species”, Viqi reports that around 60% of the medicine that are used today are either directly or indirectly taken from nature. Aspirin, penicillin, morphine, these are some of examples of medicines that from nature. Millions of lives have been saved by these medicines. The author explains that by allowing species to go extinct, people could also face the situation that lack of drug ingredients. This is
Bennett states that plants and animals are the foundation of healthy ecosystem. Human depend on ecosystem such as ocean, grassland and ancient forest to purify the air, clean the water and supply them with food. The delicate ecological balance of an area might be irreparably harmed by species’ extinction. The natural environment is usually a somewhat balanced ecosystem. A group of plants and animals living and interacting one another in a specific region. When some species become endangered, the balance of ecosystem will be broken. Thus, endangered species should be protected. Furthermore, there is a economic